Crude Oil and Fuels

Question 1

What is crude oil?

Answer 1

A mixture of different chemical compounds

Question 2

Why do we have to separate the substances in crude oil?

Answer 2

Because all the substances have different boiling points

Question 3

What is separating the substances in crude oil called?

Answer 3

Fractional distillation

Question 4

What are the compounds containing only hydrogen and carbons called?

Answer 4

hydrocarbons

Question 5

Are hydrocarbons alkanes or alkenes?

Answer 5

Alkanes

Question 6

Name these alkene molecules:

CH4
C2H6
C3H8
C4H10
C5H12

Answer 6

Methane 
Ethane 
Propane 
Butane
Pentane

Question 7

If alkanes contain as many hydrogen atoms as possible in each molecule what do we call them?

Answer 7

Saturated hydrocarbons

Question 8

Are hydrocarbons very flammable?

Answer 8

yes

Question 9

What is the general formula for alkanes?

Answer 9

2n + 2

Question 10

Would a long hydrocarbon chain have a higher boiling or lower boiling point?

Answer 10

Higher boiling point

Question 11

Would a long hydrocarbon chain have a runny or thick viscosity?

Answer 11

Thick

Question 12

Explain the steps involved in the fractional distillation

Answer 12

1. Crude oil is fed at the bottom of a tall tower
2. The temperature decreases going up the column
3. Hydrocarbons with smaller chains found near the top

Question 13

In crude oil are the hydrocarbons saturated or unsaturated?

Answer 13

Saturated