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carbon dioxide
a gas that turns limewater cloudy
chemical reaction
a change in which new substances are made and cannot easily be reversed
combustion
the scientific word for burning which is the reaction of a substance with oxygen
fuel
a material that burns and generates useable energy
hydrogen
a gas that makes a lighted splint produce a 'squeaky pop'.
products
the new substances produced in a chemical reaction and shown on the left of a word equation.
reactants
the starting substances used in a chemical reaction and shown on the right of a word equation
word equation
a summary of a chemical reaction