Chemical Reactions and Equations

Front

Catalyst that speeds up chemical reactions in living cells.

Back

enzyme

Front

States that the total mass of the reactants before a chemical reaction is the same as the total mass of the products after the chemical reaction.

Back

law of conservation of mass

Front

Process in which atoms of one or more substances rearrange to form one or more new substances.

Back

chemical reaction

Front

Description of a reaction using element symbols and chemical formulas.

Back

chemical equation

Front

Number placed in front of an element symbol or chemical formula in an equation.

Back

coefficient

Front

Substance that undergoes change in a chemical reaction.

Back

reactant

Front

Substance formed as a result of a chemical reaction.

Back

product

Front

A reaction that absorbs energy in the form of heat.

Back

endothermic reaction

Front

A reaction that releases energy in the form of heat.

Back

exothermic reaction

Front

The minimum energy required for a chemical reaction to occur.

Back

activation energy