Chemical Reactions Vocab Review

Front

Change in identity of a substance; new substance formed, irreversible.

Back

chemical change

Front

Changing physical properties without altering the substance, reversible.

Back

physical change

Front

Atoms in reactants combine in new ways to form product molecules.

Back

chemical reaction

Front

Atoms and molecules that interact with each other

Back

reactants

Front

Atoms and molecules produced in a chemical reaction

Back

products

Front

Atoms in reactants are the same as in

Back

balanced equation

Front

Matter is not created or destroyed – only changes form.

Back

law of conservation of matter

Front

Mass remains constant:

Back

law of conservation of mass

Front

Speeds up reaction rate

Back

catalyst

Front

Absorbs heat in a reaction, substance feels cooler

Back

endothermic