C2-Material choices

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  • Created by: Naana
  • Created on: 30-03-14 19:21
Define melting point
This is the temperature when the solid material turns into liquid
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What is tensile strength?
It is how much a material can resist a pulling force
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What is compression strength?
It is how much a material can resist a pushing force
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What is the hardest material found in nature?
Diamond. The only material that can cut another diamond is another diamond
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What is density?
It is a materials mass per unit volume
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What is crude oil a mixture of?
Hydrocarbon- molecules of chains of carbon and hydrogen atoms
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What causes the properties to change of hydrocarbon to change?
The length of the carbon chain
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What are the 2 important types of bonds in crude oil?
1)Strong covalent bonds- between carbon and hydrogen in each HC molecule. 2) Intermolecular forces of attractive been HC molecules in mixture
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How is crude oil separated?
By refining through fractional distillation. Hydrocarbons are separated into groups with different boiling points
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Name 3 things crude oil is used for?
Petrol, diesel, lubricating oil
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What happens during polymerisation?
Under high pressure, lots of small molecules (monomers) join together to form a long molecule (polymer).
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What are polymers used to replace?
Natural materials e.g. synthetic fibres (nylon, polyester) used to replace cotton, wool, and silk
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What is nanotechnology?
Technology dealing with making and using nanoparticles (really tiny particles)
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Other cards in this set

Card 2

Front

What is tensile strength?

Back

It is how much a material can resist a pulling force

Card 3

Front

What is compression strength?

Back

Preview of the front of card 3

Card 4

Front

What is the hardest material found in nature?

Back

Preview of the front of card 4

Card 5

Front

What is density?

Back

Preview of the front of card 5
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