Unit 2 - energy from fuels

what is a fuel ?
a chemical which is burned to produce energy
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what is combustion another word for ?
burning
2 of 22
what happens when a substance is burned ?
it reacts with oxygen
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what is the most common form of oxidation ?
the direct reaction of a fuel with oxygen through combustion
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energy is captured through what processes ?
photosynthesis and respiration
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what is an exothermic reaction ?
a reaction that releases heat energy
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what is an endothermic reaction ?
a reaction that takes in heat energy
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what are fossil fuels and what what are some examples
a finite resource coal , oil and gas
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what are examples of non fossil fuels
wood biomass hydrogen and ethanol
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what is the test for carbon dioxide
it turns limewater cloudy
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what is the test for water
turns cobalt chloride paper pink
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what is complete combustion
the burning of a fuel in a sufficient amount of oxygen
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what are the products of complete combustion
carbon dioxide and water
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what is incomplete combustion
the burning of a fuel in an insufficient supply of oxygen
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what are the products of incomplete combustion
carbon and carbon monoxide
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what from the air reacts inside a petrol engine to make poisonous gases
nitrogen and oxygen
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what is the main cause of acid rain
sulphur dioxide
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what is produced by the incomplete combustion of deisil and what is it
soot and harmful
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what do catalytic converters do
speed up the conversion o harmful pollutant gases into harmless gases
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what does carbon dioxide in the atmosphere cause
the greenhouse effect
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what can alkanes and alcohols be used as
solvents
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what happens in an exothermic reaction
more energy is released into bond making than is required for bond breaking
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Other cards in this set

Card 2

Front

what is combustion another word for ?

Back

burning

Card 3

Front

what happens when a substance is burned ?

Back

Preview of the front of card 3

Card 4

Front

what is the most common form of oxidation ?

Back

Preview of the front of card 4

Card 5

Front

energy is captured through what processes ?

Back

Preview of the front of card 5
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