Fossil Fuels Flashcards
(31 cards)
Which gas reacts with the wax as the candles burn?
Oxygen
What is meant by a fuel?
A fuel is something that burns to release energy
Give an example of a fossil fuel
Coal
Or petrol or ethanol or natural gas
What is meant by a finite resource?
Finite means they will eventually run out, they are limited
Air is a mixture of different gases?
Which gases?
Oxygen (second largest)
Nitrogen (largest)
Other gases (smallest)
State the test for oxygen gas
Oxygen gas relights a glowing splint
Oil was formed over ______ of years.
Millions
From the remains of dead animals and plants which decayed under the ___ ____ oil was formed
Sea bed
When burned some fossil fuels produce a poisonous gas, this gas reacts with water in the atmosphere to produce acid rain.
Name the gas.
Sulphur dioxide
What does acid rain do?
Pollutes rivers, killing fish. Kills young trees. Crumble statues.
When a spark is passed through the air, the nitrogen and oxygen combine to form nitrogen oxide.
What is the word equation?
Nitrogen + oxygen -> nitrogen monoxide
Write the chemical formula for nitrogen monoxide
No
Which elements are present in a hydrocarbon?
Hydrogen and carbon
Which process used to separate the hydrocarbons present in crude oil?
Fractional distillation
When petrol burns in a low supply of oxygen, it produces a poisonous gas. Name the gas?
Carbon monoxide
Give a use for the diesel fraction
Trains
Cars
Lorries
Etc
What type of chemical reaction takes place in a heated test tube?
CRACKING
What does a catalytic converter do?
Turns harmful gases into less harmful gases
Combustion is another name for what?
Burning
What reacts with oxygen during combustion?
A substance
What is the main fuel in biogas?
Methane
Air is a ratio of what?
1:4
What is a fuel crisis?
If, an overuse of fossil fuels occurred, it would lead to a fuel crisis
Ethanol is obtained from what?
Sugar cane
