11/21 Chemistry Part 2 Vocabulary

A change that produces no new product and can be reversed

• Physical Change

• Chemical Change

• No Change

• Short Change

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

• Endothermic

• Exothermic

• Cooler

• Exogonic

A change that produces a new product with new properties

• Physical Change

• Chemical Change

• No Change

• Short Change

The substances that exist before the reaction has occurred.

• Exothermic

• Reactants

• Products

• Acids

A substance that tastes bitter, feels slippery, is a good conductor, turns red litmus paper blue (has high pH numbers)

• Products

• Reactants

• Acids

• Bases

The substances that exist after the reaction has occurred

• Acids

• Bases

• Reactants

• Products

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

• Exothermic

• Endogonic

• Endothermic

• Combustion

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

• Law of Conservation of Mass

• Law of Inertia

• Combustion

• Products

Rapid chemical combination of a substance with oxygen, involving the production of heat and light = burning!

• Synthesis

• Decomposition

• Combustion

• Law of Conservation of Mass

A substance that tastes sour (ex: lemon), reacts with some metals to produce hydrogen gas, is a good conductor (has low pH numbers)

• Reactants

• Acids

• Bases

• Products