1. Some Most All Crude oil Obj: 26/11/12
what is crude oil and how is it useful?
Can you describe what sort of substance crude oil is, and where is can be found?
Some
Most
Can you state the processes which happen to crude oil before it is used?
Can you name some useful products that can be obtained from crude oil?
All

2. What is a fuel?
Something we burn to produce energy
What do we use fuels for?
Transport…cars, trains, planes
Heating homes
Generating electricity

3. Where does our fuel come from?
CRUDE OIL

4. What is crude oil?
Crude oil - .

5. What is crude oil?
Crude oil - Oil we find underground.

6. What is crude oil?
Crude oil - Oil we find underground. It is formed from partially decayed plants and animals, under mud, millions of years ago.

7. Meet the family…

8. The first four…
Methane CH4 Monkeys Ethane C2H6 Eat Propane C3H8 Peanut Butane C4H10 Butter

9. Pentane C5H12 Hexane C6H14 Heptane C7H16 Octane C8H18
The next four…
Pentane C5H12 Hexane C6H14 Heptane C7H16 Octane C8H18 5 6 7 8

10. ALKANES
Alkanes are part of a larger family called hydrocarbons. Why do you think they belong in this family?

11. ALKANES
Hydrocarbons are made up of carbon and hydrogen only.
Alkanes are saturated hydrocarbons – this means they have as many hydrogen atoms as possible.
Alkanes have the formula
CnH(2n+2)

12. Combustion of Alkanes

13. CH4 + 2O2 CO2 + 2H2O C3H8 + 5O2 3CO2 + 4H2O Combustion
Methane + Oxygen Carbon Dioxide + Water
CH O CO H2O
All alkanes react this way
Propane + Oxygen Carbon Dioxide + Water
C3H8 + 5O CO2 + 4H2O
The carbon and hydrogen in the fuel are oxidised (we have added oxygen to them).

14. Crude oil is a ………………. of compounds
Crude oil is a ……………….. of compounds. Many of these only contain atoms of ………………… and …………………… They are called ………………………. Thecompounds in crude oil can be separated using ……………………….. When hydrocarbons burn in a good supply of air, carbon ………………… and ……………….. are made, as the carbon and hydrogen in the fuel are ……………………
Wordbank: carbon, oxidised, hydrocarbons, water, distillation, dioxide, hydrogen, mixture
a) Write the formula of an alkane with i) 12 carbon atoms and ii) 20 carbon atoms.
b) How many carbon atoms in an alkane which has 30 hydrogen atoms.
c) Write a balanced symbol equation for the combustion of ethane.

15. Crude oil is a ………………. of compounds
Crude oil is a ……………….. of compounds. Many of these only contain atoms of ………………… and …………………… They are called ………………………. Thecompounds in crude oil can be separated using ……………………….. When hydrocarbons burn in a good supply of air, carbon ………………… and ……………….. are made, as the carbon and hydrogen in the fuel are ……………………
Wordbank: carbon, oxidised, hydrocarbons, water, distillation, dioxide, hydrogen, mixture
mixture
carbon
hydrogen
hydrocarbons
distillation
dioxide
water
oxidised
a) Write the formula of an alkane with i) 12 carbon atoms and ii) 20 carbon atoms.
b) How many carbon atoms in an alkane which has 30 hydrogen atoms.
c) Write a balanced symbol equation for the combustion of ethane.
C12H26
C20H42
14 (C14H30)
2C2H6 + 7O CO2 + 6H2O

16. What is a fuel?
What do we use them for?
Where do we get fuel?
What sort of compounds are fuels?
What do we get when we burn fuels?
Why is this a problem?