Chemistry Vocab. part 2

Front

Catalyst?

Back

Substance that speeds up a chemical reaction.

Front

Chemical Change

Back

A change in matter that produces one or more new substances.

Front

Reactants

Back

A starting material in a chemical reaction

Front

Coefficient: A number in front of a chemical formula indicating the number of molecules or atoms involved in a reaction.

Back

A number in front of a chemical formula indicating how many molecules or atoms of each reactant and product are involved in a reaction.

Front

Subscript

Back

A number written slightly below and to the right of a chemical symbol indicating the number of atoms of an element in a compound.

Front

Conservation of matter

Back

In any chemical reaction, matter changes form; it is neither created nor destroyed.

Front

Decomposition reaction

Back

A chemical change where a single compound breaks down into two or more simpler products.

Front

Dissolve

Back

to form a solution by mixing evenly

Front

Endothermic reaction

Back

A reaction that ABSORBS energy as heat, causing temperature to decrease.

Front

Exothermic reaction

Back

Releases energy as heat, raising temperature.