Archive for August, 2011

Searching for Phone Numbers in Texas

Searching for Phone Numbers in Texas










Austin, Texas (PRWEB) November 10, 2008

The phone book no longer caters to the needs of Texans to perform searches for telephone numbers within their state. Therefore, CellPhonesInTexas.com provides a service that helps Texans search for cell phone numbers and find out who owns them.

As the largest state in the lower forty eight, the large population of Texas is served by twenty four area codes which are each filled with phone numbers for individuals, businesses, landlines, cell phones, pagers, fax machines, and anything else that can be connected to telephone wires. It also means that there are a vast number of phone calls made every day, many of which are appearing on Caller ID display screens and are not known by the recipient.

These days, personal security and privacy is very important, so before a phone call is returned – or even answered – many people want to know who is on the other end of the line. Therefore, it is vital that people be able to perform reverse phone number searches in Texas to make certain that they’re receiving calls from friends, families, and companies with whom they want to do business, as opposed to telemarketers, scammers, harassers, and pranksters.

A reverse phone search is a service that is available exclusively online. They are broken down into lookups for cell phone numbers and those for landlines. Landlines are public domain information and are very easy to access, but cell phones have historically been much trickier to find.

CellPhonesInTexas.com ensures that people in Texas don’t suffer from this problem when they want to reverse lookup numbers from their state. The website provides an extensive, searchable database of Texas cell phone numbers, allowing people to sift through thousands upon thousands of numbers in a matter of a split second.

Visit the website for more information about reverse phone searches and finding phone numbers in Texas.

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Vocus©Copyright 1997-

, Vocus PRW Holdings, LLC.
Vocus, PRWeb, and Publicity Wire are trademarks or registered trademarks of Vocus, Inc. or Vocus PRW Holdings, LLC.







ReverseRecords.org Receives Highest Rating

ReverseRecords.org Receives Highest Rating










Phoenix, AZ (PRWEB) March 14, 2006

Review Place has recently awarded ReverseRecords.org with a five-star rating for its user-friendly site and services, which include a variety of ways to find people and information using reverse lookups.

“We are pleased to receive Review Place’s top rating,” said a spokesperson for ReverseRecords.org. “We want our customers to be able to quickly and easily find the information they need, and we think this rating shows that we have achieved our goal.”

ReverseRecords.org allows users to take their lives into their own hands by performing their own investigative searches. Users can find people and information with reverse lookups, which allow them to search by telephone number, cell phone number, current or old address, even email address and ISP. ReverseRecords.org also enables users to locate information such as criminal history, marriage and divorce records, driving records, birth and death records, child support information, and other information regarding personal and family histories. ReverseRecords.org enables users to do more than simply locate someone via a reverse lookup. ReverseRecords.org allows users to take control of their lives by helping them make informed decisions about the people they come into contact with, by chance or by choice.

“ReverseRecords.org places the power of information at the users’ fingertips,” said Andy West, the Press Relations representative for Review Place. “Our reviewers know how important this service is, and have rated ReverseRecords.org accordingly.”

One of the leading consumer-driven online communities, Review Place provides reviews on thousands of products and services. From weight loss programs to employment services to online dating sites, Review Place has the information you need! The goal is simple: to save you time and money by providing quality information on the issues that impact your life. For more information, visit http://www.ReviewPlace.com.

To find out more about ReverseRecords.org and other related services, including descriptions, testimonials, and product reviews, please visit Review Place’s Reverse Lookup category at: http://www.reviewplace.com/cat-11-People-Search–Reverse-Lookup.html.

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Vocus©Copyright 1997-

, Vocus PRW Holdings, LLC.
Vocus, PRWeb, and Publicity Wire are trademarks or registered trademarks of Vocus, Inc. or Vocus PRW Holdings, LLC.







Find More Reverse Phone Press Releases

Phone System Ecommerce Provider TelcoDepot.com to Launch New Advanced Website and Integrated Social Media Tools











www.TelcoDepot.com


Bay Shore, New York (PRWEB) July 21, 2011

Phone system ecommerce provider TelcoDepot is a leading supplier of VoIP phone systems, Response Point phones, hosted PBX services, business telephone system solutions, conference phone systems, VoIP service, video surveillance equipment, VoIP gateways, telephony products and phone system support services to small businesses in the USA. Telco Depot has announced the launch of a newly designed Website and online phone system store, scheduled for the Third Quarter of 2011.

The completely redesigned and reengineered website will sport a new cutting edge look in addition to real functional improvements significantly improving user experience. Improvements in navigation, product search, page loading speed, ordering process, and checkout are all in the works to ensure a truly satisfying online shopping experience. The new website will enable TelcoDepot.com to adapt to the changing needs of its customers by providing access to a larger and more varied spectrum of phone system products and services as well as improved support for interactive and informational resources made available to visitors online through

Telcodepot.com.

TelcoDepot.com has expressed optimism that the new Website will allow its customers to have a more engaging and rewarding user experience as they use the site to order quality phone system products, VoIP phones, VoIP service/equipment, phone system accessories, and phone system support services for their daily telecom needs.

Integrated social networking is another feature that is being planned for the new website. The new social networking tools will allow users of the new site to share resources, offers, and other promotions as well as discuss news related to the phone system products and other services available on the site, by connecting to popular social networking sites including Facebook and Twitter, as well as a number of popular bookmarking sites.

With an improved user interface, users will be able to access the features of the website, as well the expanded stock of phone system products and services, in a more interactive and user-friendly fashion, while enjoying the visually appealing characteristics of a more streamlined and dynamic website design.

Quoting a Company principal about the new Website which is scheduled for launch in the coming months; “At TelcoDepot.com, we work daily to provide the best phone system solutions for our clients, and our goal is always to provide competitive and high quality products at highly affordable prices in addition to an unparalleled customer experience. We are in the business of providing businesses with the best phone system solutions and services, and we respond quickly to the changing needs of our clients. The fast pace of change and innovation within technological markets with regards to phone systems technologies means that we always try to be one step ahead, and one of the ways we are responding is with the provision of an upgraded and more efficient website that is fitted with advanced tools to deliver more quality products and services to our customers in more functional and productive ways. It will be one fantastic website.”

TelcoDepot.com is one of the leading phone system suppliers for small businesses in the U.S., and with the maxim “You can do it…We can help!”, the company is clearly focused on providing the best quality telephone system products and services for its customers. The new announcement is welcome news and technology buffs, telecom enthusiasts, and businesses alike are encouraged to review the new website and provide feedback, with a beta version soon to be available for review.

With the recent explosion in social media as well as mobile to web integration, the Internet and ecommerce arenas are now seeing a resurgence in cutting edge web development not seen since the early days of the emergence of the world wide web. This time, it is user experience and integrated social media tools that reign supreme. The new Telcodepot.com promises to deliver that and more.

For more information on the new Telco Depot website or for any updates or inquiries, please visit TelcoDepot.com or call the Telco Depot at 1-800-390-1200.

About Telco Depot

Telco Depot is a leading supplier of quality business telephone systems, business VoIP service, VoIP phones, phone headset equipment, video surveillance systems, voice & data cabling solutions, conference phone solutions and Microsoft Response Point Systems. The company’s top priority is to help its clients make informed decisions based on their specific small business phone system needs by providing experience and expertise and guiding them in selecting the best phone systems for their businesses. Telco Depot ensures that their phone systems are fully scalable, affordable priced, and provide the highest value for their clients.

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Vocus©Copyright 1997-

, Vocus PRW Holdings, LLC.
Vocus, PRWeb, and Publicity Wire are trademarks or registered trademarks of Vocus, Inc. or Vocus PRW Holdings, LLC.







South Florida goMobi Launches Small Business Mobile Websites










Miami Beach, FL (PRWEB) August 07, 2011

Everywhere people are using mobile devices to surf the web for information. It is more important than ever for businesses to have a mobile website, especially one that presents essential information quickly and displays it in a way that helps website visitors find what they are looking for while on the go. Traditional websites are designed to be used in a desktop computing environment, with a full browser, large monitor, mouse driven navigation and in a mostly sedentary context. By comparison, the mobile user has a small screen and limited navigation tools. Businesses who do not accommodate the mobile user are losing out on the most rapidly growing informational market segment in the world today.

One of the best examples of the benefits of a mobile website would be the hospitality industry. A restaurant with a mobile site offers a fast-loading information rich experience highly focused on exactly what the customer is seeking. The hours the business is open, location (using location-based maps), phone, reservations and even coupons! All available in an easy to navigate presentation designed specifically for mobile devices.

“Having a mobile presence for your business is essential in today’s competitive market. More and more people are relying on their mobile devices to find information they need while out and about,” said Gary Hughes, president of SoFlaMobi LLC, parent company of South Florida goMobi. “We are excited to offer an easy to use mobile website solution that compliments a company’s standard website and provides a much better user experience on a mobile phone or tablet.”

Using the South Florida goMobi Set-up Assistant, business owners can customize their mobile websites to fully reflect their branding, add features and and adjust the look and feel as desired. Using the Set-up Assistants intuitive interface allows the addition of mobile-friendly features such as Find Us (with location-based maps and directions), Call Us, Reservations, Coupons, Hours of Operation, social networking and many more options that turn website visitors into customers. Transferring information from an existing website to their new mobile site is a one click operation and it will appear 6 times faster on a mobile device than on their standard website. The Set-up Assistant helps business owners create a mobile website that presents their content in a manner that makes it easy for mobile users to find the information they want quickly.

There are more than four mobile phones and tablets to every PC in the world market. That represents a lot of mobile web users. South Florida goMobi Mobile websites exploit the special characteristics of mobile devices to provide the best possible experience to the end user and they represent businesses at their best. The mobile web also has the unique advantage of being able to serve all of your audience, not just those who happen to have iPhones or an Android device. A mobile website is there already, no need to install it like a stand-alone “app”. South Florida goMobi is compatible with more than 6,000 mobile devices, including high-end smart phones, mid-range phones, budget phones and the new growing tablet market, allowing business owners to provide relevant information that their on-the-go customers want and need at their fingertips.

For more information about Mobile Website Packages from South Florida goMobi visit: http://www.southfloridagomobi.com/

About South Florida goMobi:

SoFlamobi LLC, the parent company of South Florida goMobi was formed by computer consultant Gary Hughes of Miami Beach to partner with dotMobi of Dublin, Ireland to provide the goMobi Mobile website solution to the South Florida small business market. In addition to managing and hosting the goMobi mobile sites, SoFlaMobi LLC also partners with Tucows, Inc. to offer domain registrar and Email management services. Owned and operated locally, South Florida goMobi focuses exclusively on the South Florida business market from Palm Beach to Key West.

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Vocus©Copyright 1997-

, Vocus PRW Holdings, LLC.
Vocus, PRWeb, and Publicity Wire are trademarks or registered trademarks of Vocus, Inc. or Vocus PRW Holdings, LLC.







Related Mobile Phones Press Releases

How to Distinguish Between Crystal and Glass



The fundamental idea is that, all crystals are glasses but all glasses are not crystals. The uses of glasses and crystals are numerous. We use crystal wares and glass wares in our houses, mostly for decorative purposes. Different types of spectacle glasses are widely used in our day-to-day life and we can even make jewelries out of crystals. Now, when we look into the differences between glass and crystal, some differences are visible to the naked eye and some can be found through experiments only. But before knowing how to identify glass from crystals, it is necessary to understand what is a glass and what is a crystal. Let’s analyze it.

What is a Glass?
Glass is a supercooled liquid that has a static nature, because its molecular structure doesn’t change during the process of melting and solidification. Glass is an inorganic material, which is basically made by melting substances and then cooling it. A sudden change in the thermal expansion coefficient and specific heat capacity, specifically during the melting point of the glass material, which is supercooled, becomes a glass. The particles present in the glass are much smaller than the wavelength of visible rays, which makes them transparent. Obsidian and meteorite glasses are the types of glasses that are naturally available in the earth and the other types of glasses are made artificially. Some of the other types of glasses are silicate glasses, network glasses, sugar glasses, colloidal glasses, etc. Due to microscopic cracks on the surface of the glass and thermal stress, glasses break. What exactly happens during the breaking of glass, is that, the silicon and oxygen bonds of the glass material are broken.

What is a Crystal?
Crystals have special electrical conductivity property, which can be used in electronic and communication devices. Crystals such as Quartz and Rochelle salt exhibit piezoelectric effect which means, these crystals can supply electrical voltage when mechanical stress is applied to it. There are different types of crystals, such as covalent crystals, metallic crystals, ionic crystals and molecular crystals. So, depending on the type of crystal, the properties will change. Crystals like diamond, graphite, etc., have covalent bonds and crystals like table salt have ionic bonds. The number of electrons and protons present in a crystal is balanced. Depending on the color of the light absorbed by the crystal, its color appearance will change. For example, if a crystal absorbs yellow light, it will appear blue, which is called as ‘complementary color’.

Differences Between Glass and Crystal

Both glass and crystal have their own applications depending on their pros and cons. Sometimes it is not possible to identify whether it is a glass or crystal, just by looking at it. In such cases, the reliable way to identify it, can be done through examining the lead content in the material. According to European Union standards, materials that contain 4% lead are called glass and those with more than 10% lead, are defined as crystals. Hope this comparison has left no doubt in your minds regarding how glasses are different from crystals.

What was the Milgram Experiment?



What is the difference between right and wrong? And when should one question the difference? If you are told to hit someone violently, you would object but what if your boss or your superior or even your elders told you to obey them and hit someone, then would you do it? Does someone’s authority make an obviously wrong act, a right one? Questioning authority is a two-edged sword, you could end up being labeled a rebel or a troublemaker or you could end up compromising on your own sense of ethics. Ethical dilemmas can take various shapes and forms but with respect to obedience, the outcome can be very unpredictable. Read on to learn about the Milgram experiment, a psychological test to evaluate man’s struggle between obedience and morality.

Background of the Experiment

Stanley Milgram was 28 years old, he had just graduated with a Ph.D in social psychology from Harvard in 1961. At that time, a famed Nazi war criminal, Adolf Eichmann, was being tried for his crimes against humanity in Jerusalem. While the world was condemning and mulling over such a cruel person’s punishment, Milgram had an interesting train of thought: what if they were just following orders? And this lead to another question: what if people will do anything, no matter how cruel it is, just because someone in authority told them to do so? Can man’s sense of right and wrong be influenced by authority? Is there a fine line between obedience and conscience and at what point will a man cross it? To answer such questions, Milgram devised an experiment, to observe and rank how much an individual will obey an authority figure. For his experiment, he advertised in newspapers and on the radio. 40 men from all walks of life responded, they were promised a pay of $4.50, irrespective of how they performed. The experiments were conducted in July 1961, in the Linsly-Chittenden Hall in the University of Yale’s campus.

Outline of the Milgram Experiment

Three characters were involved in this experiment.

  • The Experimenter (E) – he was in charge of monitoring the proceedings and would provide instructions to the teacher (T).
  • The Teacher (T) – the teacher would ask questions of the learner (L) in the form of word pairs. He would check each answer and see if it was correct or wrong and act accordingly.
  • The Learner (L) – he was asked questions by the teacher and expected to answer the questions correctly.

The very beginning of this experiment was deceptive. The test subject and the learner (an actor hired by the experimenting team) were asked to draw slips of paper to decide their respective roles, either teacher or learner. But unknown to the test subject, all lots of paper are marked as “teacher”. So the actor would lie and say his slip says “learner”. This ensured the test subject would always be a teacher.

Next the learner was strapped to a chair and electrodes were attached to his arm in one room. This was done in front of the teacher. He and the experimenter were made to sit in another room, neighboring that of the learner’s. Here the teacher was introduced to a rather frightening shock generator, marked with various levels of shock, from 30 – 450 volts. Labels such as “slight shock”, “Danger: severe shock” and “XXX” were used. At this point, the teacher was told that he had to ask work-pairs to the learner and with each mistake the learner made, the teacher had to shock him, using the machine. The teacher was also given a sample shock, as an indicator of what it felt like. He was also told that with each shock, the voltage would be increased by 15-volts. The experiment started in the following manner, the teacher would read out a word pair. First a word was read, the learner was presented with 4 choices, as to its pair and had to press a respective button to answer the question. If correct, the teacher would read the next pair. If incorrect, the learner would be shocked.

In reality, the learner was never getting shocked. The shock generator machine was just a decoy, it was actually a tape recorder. When the teacher pressed a shock level button, intending to shock the learner, actually a pre-recorded cry or plea or yowl of pain was being played to the teacher, who thought it is coming from the learner. So the teacher felt that he was torturing the learner for an incorrect answer, when nothing of that sort was taking place. With each shock, the cries would be more agonizing and at a certain shock level, the teacher was told the learner have a heart condition. After some shocks, the learner would bang on the wall. At the last two higher levels of shock, the learner would not answer any questions.

The experimenter would sit and monitor the proceedings and not interfere in any manner. But if the teacher would ask to stop the experiment, the experimenter would reply with the following prods:

  1. Please continue.
  2. The experiment requires that you continue.
  3. It is absolutely essential that you continue.
  4. You have no other choice, you must go on.

If the teacher was told all four verbal prods, then the experiment was stopped. Else it ended only after the teacher shocked the learner, 3 times with the maximum 450 volt shock levels.

Milgram Experiment Results

Given the rather cruel premise of the experiment, Milgram’s peers were rather skeptical of its results and felt that no or perhaps 1-2 subjects would go as far as the final shock level. Milgram polled senior year psychology students at Yale, who also felt very few would use the final shock level. But the results of the experiment proved them wrong. Firstly, all 40 subjects shocked the learner up to a maximum of 300 volts. And 26 out of 40 subjects shocked the learner at the maximum shock level of 450 volts. There were objections, the subjects protested at some point, they were also very ill-at-ease but in the end, they obeyed the experimenter and shocked the learner, irrespective of the high shock level and the pain felt by the learner. Also no one left the room to check on the learner’s state. Milgram repeated the experiment at an office and reported that though the percentage was less, it was not of a significant amount. He also carried out the experiment with female test subjects, the rate of 65% prevailed. All such details were summed up in his article, “The Perils of Obedience” published in the Journal of Abnormal and Social Psychology, as well as in his book Obedience to Authority: An Experimental View.

In summation, psychology experts and critics have argued and still feel that the ethical problems with the Milgram experiment, make it a controversial topic and cruel experiment, which has tarnished the name of psychology experiments. But the harsh truth that Milgram was trying to expose is this: we do what we are told to do. And even if the command is a morally wrong one, that could hurt someone, our first and obvious instinct is to obey and follow. Such experiments highlight another ethical dilemma: who is the real bad guy or criminal here, the authority figure who issues the command or the individual who obeys and carries out such cruelty?

Search Engine People Inc. Launches TV campaign June 1st












Toronto (PRWEB) June 01, 2011

Search Engine People Inc. (SEP) today announced that for the first time, it will be launching a television commercial aimed at the southwestern Ontario market. The commercial will assume the same basic messaging as its radio commercials, focusing on the fact that the company is not a “jack of all trades”, but rather a “master of search”. The commercial also shows the faces of a number of its staff, giving viewers a glimpse of the diversity that helps make Search Engine People so successful.

The television ad is designed to support and complement all other forms of promotion being undertaken by SEP including radio, search, speaking, social media, trade shows, and more. According to SEP CEO Jeff Quipp, “while being able to practice what we preach is of utmost importance (and we do … search “SEO” on Google.ca), its important to also demonstrate that search is just part of the marketing mix, and not the entire mix. Creative media such as television and radio, drive awareness and recognition, while search gets our message in front of potential clients when they’re ready to purchase.”

“2010 was a stellar year for Search Engine People” said Quipp. “We made the Profit 100 list of Canada’s Fastest Growing Companies in both 2009 and 2010. Our goal is to keep the growth momentum going, and to retain our leadership position in the Canadian market, despite the entrance of larger players.” Competition from large American firms was very strong, but the firm’s unique approach and philosophy served it well. As Quipp says “The Profit 00 acknowledgment is a testament to our win-win-win philosophy, and tells us to continue along that path of ensuring that all involved parties (clients, employees, and SEP itself) succeed.”

SEP began operations in 2001 out of the basement of Quipp’s home, and grew rapidly since inception. The company now has a team of 55 individuals focused solely on helping Canadian companies with their search engine marketing efforts, and is growing in excess of 50% per year. The company’s specialties include search engine optimization (SEO), paid search (PPC), and social media marketing (SMM), though the majority of the firms revenues derive from SEO and PPC.

About Search Engine People Inc.

Search Engine People Inc. (SEP) is Canada’s largest search marketing firm, with expertise in SEO, PPC , local search, social media marketing, and campaign tracking. Search Engine People works with a variety of clients from national and multinational corporations such as Scotiabank, Purolator, and Discount Car and Truck Rental, to small and medium sized enterprises. For more information regarding Search Engine People Inc., visit http://www.searchenginepeople.com.

Contact:

Jeff Quipp, CEO

Search Engine People Inc..

100 Westney Road South #200

Ajax, ON L1S 7H3

(905) 426-9340

Jeff (at) searchenginepeople (dot) com

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Vocus©Copyright 1997-

, Vocus PRW Holdings, LLC.
Vocus, PRWeb, and Publicity Wire are trademarks or registered trademarks of Vocus, Inc. or Vocus PRW Holdings, LLC.







More People Search Press Releases

OldCellPhone.com Reaches Benchmark in Cash for Cell Phone Program











Port St. Lucie, FL (PRWEB) March 22, 2005

After a year and a half, OldCellPhone.com is pleased to announce the Turn Your Old Cell Phones into Cash Program circulates 20,000 handsets a month and now purchases 300 different models for cash. With two million hits per month to the website, OldCellPhone.com provides cell phone recycling services to cellular users across the United States with fast, efficient service and new, extended offerings.

“Over 150 million cell phones are thrown away each year, and it is very harmful to the environment,” explained Rob Newton, President of OldCellPhone.com. “Most consumers don’t know what to do with their old models, so they just throw them in the trash. OldCellPhone.com makes it very easy to turn old, unused models lying around the house into cash.”

It takes only three easy steps for a consumer to get cash for cell phones. By logging on to OldCellPhone.com, users find the make, model and value of the phones they want to recycle. After entering the appropriate shipping information, OldCellPhone.com provides the postage-paid return box for free shipping, and the cash is sent 30 days later. Currently, OldCellPhone.com purchases 300 different cell phones for cash, and pays anywhere from $ 1 – $ 200 per phone.

About OldCellPhone.com

In response to the predicted 500 million old cell phones weighing over 250,000 tons and potentially entering our waste stream, OldCellPhone.com’s solid mission is to provide an environmentally safe solution for the popular dilemma, “What should I do with my old cell phones?” Recycling them prevents the toxic materials present in their makeup (lead, arsenic, etc) from reaching landfills, thereby protecting the environment. For more information, please visit http://www.oldcellphone.com.

Contact:

Rob Newton

OldCellPhone.com

Phone 772-871-9799

Fax 772-871-9975

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Vocus©Copyright 1997-

, Vocus PRW Holdings, LLC.
Vocus, PRWeb, and Publicity Wire are trademarks or registered trademarks of Vocus, Inc. or Vocus PRW Holdings, LLC.







Properties of Silicon Dioxide



We all remember visiting sandy beaches in our childhood. What did we do then? Well, we used to carve castles in the sand and beam at our creations! But have you ever wondered what the sand might look like at the molecular level? What might happen, say, if we burnt the sand or dissolved it in a strong acid or alkali? If these questions have aroused your curiosity then continue reading for information on the many properties of silicon dioxide and how these properties make it a useful compound in more ways than one.

Silicon dioxide is found in nature in mainly two forms: crystalline and amorphous. Silica is also a constituent of gemstones and traces of the compound have also been found in volcanic rocks. It is the most abundant compound of silicon, found on the earth’s crust and also one of the most commonly found oxides. Silica in pure sand is the amorphous form while quartz is an example of crystalline silica found in nature.

Molecular Structure of Silicon Dioxide

Silica occurs in nature in more than 13 different structures, each one slightly varying from the others. The physical properties might be different but the chemical properties remain the same, irrespective of the structure. In order to obtain a clearer understanding of the many properties of silicon dioxide or silica, it is important that we have the basic idea about the molecular structure of this oxide of silicon.

The building block of the structure of silica is the SiO4 unit. The structure of crystalline forms of silica is represented as continuous links of the SiO4 unit. The image above shows the structure of silicon dioxide. Silicon dioxide is formed when silicon is exposed to the oxygen in the atmosphere. If you look at the atomic model of silicon dioxide, you’ll see that the four oxygen atoms (shown in blue) are located far apart from the silicon atom at the centre (shown in green), with the molecule forming a tetrahedral structure (as shown by the thin black lines). Here are some facts about the molecular structure of silicon dioxide.

  • The angle formed between each -O-Si-O- bond is 109.5 degrees. However, in quartz, this angle is around 144 degrees.
  • There is uneven charge distribution between parts of the tetrahedron, with the center being highly positive and the corners being strongly negative. This is because of the strong polarity of the Si-O bond.
  • In gaseous state, the structure of silicon dioxide forms linear O=Si=O molecules.
  • Each individual SiO4 tetrahedron is connected with adjacent tetrahedrons at the corners, forming a three-dimensional structure.
  • The “bridge” formed by the oxygen atoms between the silicon atoms of adjacent tetrahedrons, is responsible for some of the unique properties of silicon dioxide.
  • The tetrahedral shape is responsible for the rigidity of the silicon dioxide molecule.
  • The length of the Si-O bond is 0.16 nm.

You might be wondering why the molecular formula of silicon dioxide is SiO2 when the structure shows four atoms of oxygen surrounding each silicon atom. Well, the reason is every individual tetrahedron shares each of its four oxygen atoms with the neighboring tetrahedron, which makes the net chemical formula to be SiO2. In addition to quartz, there are many other crystalline forms of silicon dioxide found in nature, under different temperature and pressure conditions. In high temperature conditions, silica is found in the form of tridymite and cristobalite whereas in regions of high pressure, it is found as seifertite and coesite.

Properties of Silicon Dioxide

Now that you have a clear understanding about the structure of silica, let’s have a look at the physical and chemical properties of this compound.

Physical Properties of Silicon Dioxide
Due to the tetrahedral structure, the melting point of silicon dioxide is very high. The strong silicon oxygen covalent bonds get broken at very high temperatures, close to 1700oC. Also, silicon dioxide is very hard and rigid and this is again due to the strong covalent bond between silicon and oxygen. Due to the absence of free electrons within the molecular structure, silicon dioxide is a very bad conductor of electricity and acts as an insulator. Silicon dioxide is insoluble in water and in all organic solvents. However, it is soluble in alkalies and hydrofluoric acid. The table given below enlists the values for some of the physical properties of silicon dioxide, both crystalline and amorphous.

Chemical Properties of Silicon Dioxide
Silicon dioxide reacts with very few substances. Here we’ll look into some of the common reactions of silicon dioxide and what are the products formed by each one of them.

Uses of Silicon Dioxide

One of the most common uses is silicon dioxide in food, where it is used as an additive. Following are some other important applications of silicon dioxide.

  • Quartz is used in the glass industry as a raw material for manufacturing glass.
  • Silica is used as a raw material for manufacturing concrete.
  • Silica is added to varnishes because of its hardness and resistance to scratch.
  • Amorphous silica is added as fillers to the rubber during the manufacturing of tires. This helps reduce the fuel consumption of the vehicle.
  • Silica is used in the production of silicon.
  • Due to the fact that silica is a good insulator, it is used as a filler material in electronic circuits.
  • Because of its piezoelectric properties, quartz is used in transducers.
  • It is a substance used for making optical fibers.
  • Due to its ability to absorb moisture, silica is used as a desiccant.

Silicon dioxide is the most common oxide found on earth. Hope this article has helped you get a basic understanding of the properties of silicon dioxide and also what makes this oxide unique in more ways than one.

Properties of Silicon Dioxide



We all remember visiting sandy beaches in our childhood. What did we do then? Well, we used to carve castles in the sand and beam at our creations! But have you ever wondered what the sand might look like at the molecular level? What might happen, say, if we burnt the sand or dissolved it in a strong acid or alkali? If these questions have aroused your curiosity then continue reading for information on the many properties of silicon dioxide and how these properties make it a useful compound in more ways than one.

Silicon dioxide is found in nature in mainly two forms: crystalline and amorphous. Silica is also a constituent of gemstones and traces of the compound have also been found in volcanic rocks. It is the most abundant compound of silicon, found on the earth’s crust and also one of the most commonly found oxides. Silica in pure sand is the amorphous form while quartz is an example of crystalline silica found in nature.

Molecular Structure of Silicon Dioxide

Silica occurs in nature in more than 13 different structures, each one slightly varying from the others. The physical properties might be different but the chemical properties remain the same, irrespective of the structure. In order to obtain a clearer understanding of the many properties of silicon dioxide or silica, it is important that we have the basic idea about the molecular structure of this oxide of silicon.

The building block of the structure of silica is the SiO4 unit. The structure of crystalline forms of silica is represented as continuous links of the SiO4 unit. The image above shows the structure of silicon dioxide. Silicon dioxide is formed when silicon is exposed to the oxygen in the atmosphere. If you look at the atomic model of silicon dioxide, you’ll see that the four oxygen atoms (shown in blue) are located far apart from the silicon atom at the centre (shown in green), with the molecule forming a tetrahedral structure (as shown by the thin black lines). Here are some facts about the molecular structure of silicon dioxide.

  • The angle formed between each -O-Si-O- bond is 109.5 degrees. However, in quartz, this angle is around 144 degrees.
  • There is uneven charge distribution between parts of the tetrahedron, with the center being highly positive and the corners being strongly negative. This is because of the strong polarity of the Si-O bond.
  • In gaseous state, the structure of silicon dioxide forms linear O=Si=O molecules.
  • Each individual SiO4 tetrahedron is connected with adjacent tetrahedrons at the corners, forming a three-dimensional structure.
  • The “bridge” formed by the oxygen atoms between the silicon atoms of adjacent tetrahedrons, is responsible for some of the unique properties of silicon dioxide.
  • The tetrahedral shape is responsible for the rigidity of the silicon dioxide molecule.
  • The length of the Si-O bond is 0.16 nm.

You might be wondering why the molecular formula of silicon dioxide is SiO2 when the structure shows four atoms of oxygen surrounding each silicon atom. Well, the reason is every individual tetrahedron shares each of its four oxygen atoms with the neighboring tetrahedron, which makes the net chemical formula to be SiO2. In addition to quartz, there are many other crystalline forms of silicon dioxide found in nature, under different temperature and pressure conditions. In high temperature conditions, silica is found in the form of tridymite and cristobalite whereas in regions of high pressure, it is found as seifertite and coesite.

Properties of Silicon Dioxide

Now that you have a clear understanding about the structure of silica, let’s have a look at the physical and chemical properties of this compound.

Physical Properties of Silicon Dioxide
Due to the tetrahedral structure, the melting point of silicon dioxide is very high. The strong silicon oxygen covalent bonds get broken at very high temperatures, close to 1700oC. Also, silicon dioxide is very hard and rigid and this is again due to the strong covalent bond between silicon and oxygen. Due to the absence of free electrons within the molecular structure, silicon dioxide is a very bad conductor of electricity and acts as an insulator. Silicon dioxide is insoluble in water and in all organic solvents. However, it is soluble in alkalies and hydrofluoric acid. The table given below enlists the values for some of the physical properties of silicon dioxide, both crystalline and amorphous.

Chemical Properties of Silicon Dioxide
Silicon dioxide reacts with very few substances. Here we’ll look into some of the common reactions of silicon dioxide and what are the products formed by each one of them.

Uses of Silicon Dioxide

One of the most common uses is silicon dioxide in food, where it is used as an additive. Following are some other important applications of silicon dioxide.

  • Quartz is used in the glass industry as a raw material for manufacturing glass.
  • Silica is used as a raw material for manufacturing concrete.
  • Silica is added to varnishes because of its hardness and resistance to scratch.
  • Amorphous silica is added as fillers to the rubber during the manufacturing of tires. This helps reduce the fuel consumption of the vehicle.
  • Silica is used in the production of silicon.
  • Due to the fact that silica is a good insulator, it is used as a filler material in electronic circuits.
  • Because of its piezoelectric properties, quartz is used in transducers.
  • It is a substance used for making optical fibers.
  • Due to its ability to absorb moisture, silica is used as a desiccant.

Silicon dioxide is the most common oxide found on earth. Hope this article has helped you get a basic understanding of the properties of silicon dioxide and also what makes this oxide unique in more ways than one.

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