Explain the following observations: a) Both diamond and silicon carbide are very hard, whereas graphite is both soft and slippery. b) Carbon dioxide is a gas, whereas silicon dioxide is a high-melting solid. Why are siloxanes (made of silicon and...
The electrode that will be plated is generally made from a cheaper metal or a nonmetal coated with a conducting material such as graphite. Either way, it has to conduct electricity or no electric current will flow and no plating will occur....
Explain why graphite has a lower melting point than diamond even though both are carbon compounds. Describe the bonding in metals and discuss how this explains high electrical conductivity. Explain why some ionic compounds are soluble in water. Does CO2 or SO2 have a lower boiling poin...
On the basis of microstructure, briefly explain why gray iron is brittle and weak in tension. a. The graphite phase is brittle which makes the entire material brittle b. The Bake shape of the graphite introduces stress concentration Explain the prope...
is 0.140, th Determine the modulus of resilience for each of the following alloys: Multiple Choice 6. On the basis of microstructure, briefly explain why gray iron is brittle and weak in tension. a. The graphite phase is brittle...
Explain why is graphite often used as a solid lubricant? Explain the advantages of hydroforming in manufacturing processes. What is the effect of temperature on materials? Explain in detail about its effect on length. What determines the torque or force...
Describe the atom and the components it is made of. Explain, why the type of bond could determine the volatility of a substance? Sodium metal is soft whereas sodium chloride is very hard. Explain why. Describe some uses of lithium and its compounds. Describe the structure of...
Explain why is graphite often used as a solid lubricant? (a) Explain how the secondary machining techniques that are used to mill the finish on top of a stainless steel component. (b) State the health and safety precautions...
Molecular crystals have low melting points and are soft. Answer and Explanation: I2 is intermolecularly held together by van der Waal's forces. I2 can easily be classified as a molecular crystal. However,...Become a member and unlock all ...
In a solid form of graphite or diamond, Carbon is a(n) ___ solid. A. atomic B. covalent network C. molecular D. ionic E. metallic A solid melts below 100 degrees Celsius and is insoluble in water. Is it metallic, network covalent, ...