Chapter 25- Fuels

Question 1

Oil, gas, coal all contain

Answer 1

Hydrocarbons

Question 2

Word equation for the burning of fossil fuels

Answer 2

Fossil fuel+oxygen-> Co2+ H20

Question 3

Experiment to prove:

Fosil fuel burning -> H2O and Co2

Answer 3

• Candle under a funnel
• Funnel goes to test tube containing cobalt chloride/any hydrous copper sulfate in beaker full of ice water
• Funnel also leads to test tube of limewater

(C.c. Blue-> pink
A.c.s. White-> blue
L.w. Clear-> milky white)
(Test tube in ice to condense water vapour to water)

Question 4

Greenhouse effect

Answer 4

Burning of fossil fuels adds to eath’s Co2 layer

Co2 blocks heat

Question 5

Fire triangle contains

Answer 5

Fuel
Oxygen
Heat

Question 6

Explain how the burning of fossil fuels contribute to acid rain

Answer 6

Burns produces Sulfur dioxide -> mixes w/ rain sulfuric acid

Burns produces carbon dioxide -> mixes w/ rain carbonic acid

Question 7

Explain how car exhaust add to acid rain

Answer 7

Produces nitrogen oxides-> nitric acid

Question 8

How to reduce global warming and acid rain

Answer 8

• less fossil fuels
• encourage renewable energy
• planting trees
• fitting catalytic converters to remove pollutants from car exhaust