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Q4. Oil rigs are used to drill for crude oil.

a. Drill heads are made from steel. Steel is an alloy.
Explain why Alloys are harder than pure metals.

b. Drill heads also contain diamonds.
Describe as fully as you can the structure and bonding in diamond.

c. Polymers are produced from crude oil.
Describe the structure and bonding in thermosoftening polymer and explain why thermosoftening polymers melt when heated.

Respuesta :

a. Alloys are made up of 2 or more melted down metals to make 1 stronger metal
b. Drills use non pure diamonds that had carbon spots and because of this diamond (hardest mineral) is used on some drill heads to last longer
c. Everything in the world has a melting point of some degree some elements take 300° to melt while some can melt just from being in your hand 

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