A change that produces no new product and (usually) can be reversed

Chemical reaction in which energy is given off to the surroundings (exo=exit). The final product will feel warmer

A change that produces a new product with new properties

The substances that exist before the reaction has occurred.

A substance that tastes bitter, is a good conductor, turns red litmus paper blue

The substances that exist after the reaction has occurred

A chemical reaction in which energy is absorbed. The final product will feel cooler

A scientific law that states that the total mass of the reactants in a chemical reaction is always equal to the total mass of the products

A very rapid reaction of a substance with oxygen to produce oxides

A substance that tastes sour, reacts with some metals to produce hydrogen gas, is a good conductor

Where a compound is broken down into elements or smaller compounds

What type of chemical reaction is this?

A substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.