Properties and uses of crude oil

Question 1

What are their different properties based on?

Answer 1

They have different structure and therefore different properties.

Question 2

What is crude oil mostly made out of?

Answer 2

Alkanes

Question 3

What are the first four alkanes?

Answer 3

Methane, ethane, propane, butane.

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Question 4

What is the general formula for alkanes?

Answer 4

CnH2n+2

Question 5

How many bonds does carbon form?

Answer 5

4

Question 6

How many bonds does hydrogen form?

Answer 6

1

Question 7

What are the trends for hydrocarbons?

Answer 7

1) The shorter the molecule, the less viscous it is.
2) The shorter the molecule, the more volatile it is. (turn into gas at a lower temperature)
3) The shorter the molecule, the more flammable it is.

Question 8

What does a hydrocarbon’s viscosity help decide?

Answer 8

For eg a very viscous hydrocarbon can be used for lubricating engine parts.

Question 9

What is crude oil used as?

Answer 9

Fuels, plastics etc

Question 10

Pros and cons of using crude oil?

Answer 10

Pros: Things are ‘set up’ for crude oil already, easiest and cheapest to use, more reliable.

Cons: It’s non-renewable (will run out), oil spills, contributes to global warming, acid rain and global dimming.