For example, tungsten has the highest melting point of any metal at 3,422°C. Ceramics also have high melting points due to their ionic or covalent bonds. These bonds are extremely strong and require a large amount of energy to break them apart. Ceramics such as alumina, silicon carbide, ...
Why does BeCl2 have a low melting point but SiO4 has a high melting point even though they both have covalent bonds between the atoms? Rank these bonds from most ionic to most covalent in character Most ionic most covalent K-F , F-F, Br-F, Cl-F , ...
Today, the field is populated by a lot more than those Silicon Valley bro dudes. It’s up to everyone to find diverse talent and bring them in to make tomorrow’s AI better for everybody. This article has been updated. It originally published in September 2017. ...
Explain why low-density polyethylene is good for making grocery bags, but super high molecular weight polyethylene must be used in applications for which strength and high wear resistance are needed. Aluminum and silicon are side-by-...
and spintronic devices11,12. Growth of ZnO on Si is vital for integrating this material into the present microelectronic technology. One peculiar observation that has become more easily apparent with the growth of ZnO nanowires is that on substrates such as glass and silicon, that do not provide...
What is the noble gas configuration for silicon? Is argon a greenhouse gas? What are the 6 noble gases that occur naturally? What is potassium-argon dating? Why is the periodic table arranged the way it is? Why did Dmitri Mendeleev create the periodic table?
Explain why each element has a unique light pattern in a flame. Explain why alkali metals produce a colored flame? Explain how a pure metal is held together. Include a definition of a metallic bonding in your explanation. Is silicon a conductor or semi...
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Glass, usually made of silicon dioxide,doesn't change its shape over the short timescales relevant to humans, says chemist Paddy Royall of the University of Bristol, England. (If it does change shape, that process takes billions of years.) ...
Explain how the bonding of silicon makes it useful as a semiconductor but not as a conductor of electricity. Why do electrons repel each other? Why is seawater a better conductor of electricity than water from a freshwater lake? Does cobalt(II) chloride dissolved in water possess electrical con...