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KS3 CHEMICAL REACTIONS

Across
A substance that contains only carbon and hydrogen.
Type of reaction when a substance burns in oxygen.
One of the products formed when a hydrocarbon burns in oxygen.
One of the products formed when a hydrocarbon burns in oxygen (two words).
Type of reaction when a substance breaks down into at least two other substances when heated (two words).
Type of reaction where energy is released to the surroundings.
Down
When atoms rearrange themselves to form compounds (two words).
Type of substance formed when metal carbonates are heated. Hint! its a gas (two words).
Type of reaction where energy is taking in from the surroundings.
Type of substance formed when metal carbonates are heated. Hint! its not a gas (two words).
This is not lost or gained when reactants turn into products in a chemical reaction.
A substance that speeds up the rate of reaction without being changed or used up.