1 / 12

Silicon

Silicon. Devante’ Dixon. General Information. I am in the 3 rd group and 14 th period. My atomic number 14 and my atomic weight is 28. I’m also an tetravalent metalloid. . Discovery . I was discovered Jöns Jacob Berzelius in 1873. I am one of many elements he discovered. .

kevyn
Télécharger la présentation

Silicon

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Silicon Devante’ Dixon

  2. General Information • I am in the 3rd group and 14th period. • My atomic number 14 and my atomic weight is 28. • I’m also an tetravalent metalloid.

  3. Discovery • I was discovered Jöns Jacob Berzelius in 1873. • I am one of many elements he discovered.

  4. Me in depth

  5. Special things about me • I am used in surgery. • The lowest acceptable purity for electronic grade silicon (me) is 99.9999999%. This means that for every billion atoms, only one non-silicon atom is allowed. • I am is the second most abundant element in our planet’s crust. Oxygen (47.3%) and silicon (27.7%) together make up 75% of the weight of Earth’s crust. Most of the crust’s silicon exists as silicon dioxide; we are familiar with this as sand or quartz. • I am is the eighth most abundant element in the Universe; it is made in stars with a mass of eight or more Earth suns. Near the end of their lives these stars enter the carbon burning phase, adding helium nuclei to carbon to produce oxygen, neon, magnesium and silicon. • I also burn is the last phase of a heavy star’s life before a supernova and last only about one day. During this phase, helium nuclei add to silicon to make sulfur, argon, calcium, titanium, chromium, iron and nickel. • Lastly, I expand when I freeze.

  6. Friends and Enemies • I do not react with oxygen, water, most acids, and the noble gases. • I react with halogens or dilute alkalis. • REACTION

  7. Important things I’ve done: • Used to turn solar energy into electricity. • One of the most important ingredients to make steel. • Also used as adhesives, sealants, and insulators.

  8. Compounds • 1. Silicon Carbide (SiC)- Hard, high melting solid. Also used as an abrasive. • 2. Silicon Dioxide (SiOH4)- High melting solid with a number of crystal forms. Ex: quartz • 3.Silane (SiH4)- pyrophoric gas with a similar tetrahedral structure similar to methane.

  9. Physical Features • I am a metalloid and a semiconductor. • My melting point of is 1,410°C (2,570°F) and boiling point is 2,355°F (4,270°F). My density is 2.33 grams per cubic centimeter. I also have a hardness of about 7 on the Mohs scale. • The Mohs scale is a way of expressing the hardness of a material. It runs from 0 (for talc) to 10 (for diamond).

  10. Chemical Features • I am relatively inactive element at room temperature. I do not combine with oxygen or most other elements. Water, steam, and most acids have very little affect me. At higher temperatures, however, I do become much more reactive. In the melted state, I can combine with oxygen, nitrogen, sulfur, phosphorus, and other elements. I can also form a number of alloys very easily in my melted state.

  11. More Facts • Meteorites known as aerolites are composed of silicone. • Silicon Valley is the nickname for a place in California that has many electronic and computer manufacturing companies. It is so named because Silicon is one of the materials used to make such computer and electronic products.

  12. References • Google • Youtube • http://www.chemistryexplained.com

More Related