Science Vocabulary Sheet #5 Crossword

A substance that takes part in and under goes change during a reaction.
Energy stored in bonds of chemical compounds.
A chemical reaction that releases energy though light or heat.
A chemical reaction that requires heat.
Accompanied by the release of en energy.
Accompanied by, or requiring the absorption of energy, than products being greater free energy than the reactants.
A type of reaction in which reactants combine to form a single product.
A reaction that occurs when one reactant breaks down into two or more products
A chemical decomposition produced by passing an electric current through a liquid or solution containing ions.
A type of chemical reaction where a compound and an oxidant is reacted to produce heat and a new product.
A reaction by which one element replaces an element in a compound.
A chemical reaction where two compounds react, and the positive ions and the negative ions of the two reactants switch places, forming two new compounds.
A group of atoms behaving as a unit in a number of compounds.
A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
A substance produced by a living organism that acts as a catalyst to bring out a specific biochemical reaction.
The substance on which an enzyme acts