Chemical Reaction - WHEN MATTER CHANGES FROM ONE COMPOUND TO ANOTHER WITH DIFFERENT PROPERTIES

Physical Reaction - WHEN MATTER CHANGES ITS APPEARANCE BUT DOES NOT CHANGE ON A MOLECULAR LEVEL

Biochemical Reaction - A CHEMICAL CHANGE THAT HAPPENS IN A CELL

Reactant- CHEMICAL(S) BEFORE A REACTION TAKES PLACES

Product - CHEMICAL(S) AFTER A REACTION TAKES PLACE

Law of Conservation of Mass - MATTER CANNOT BE CREATED OR DESTROYED

Density - THE AMOUNT OF MASS PER VOLUME OF A SUBSTANCE (UNIT = g/mL or g/cm³)

Viscosity = THE ABILITY OF A LIQUID SUBSTANCE TO FLOW, CAN BE HIGH OR LOW

Solid = MOLECULES HELD TOGETHER IN A FIXED PATTERN

Liquid= MOLECULES THAT ARE CLOSE TOGETHER BUT FREE TO MOVE

Gas = MOLECULES THAT ARE WIDELY SEPARATED

Solute = THE SUBSTANCE BEING DISSOLVED IN A SOLUTION

Solvent = THE SUBSTANCE DOING THE DISSOLVING IN A SOLUTION

Aqueous Solution= WHEN WATER IS THE SOLVENT 

pH = POTENTIAL HYDROGEN, ACIDS AND BASES

Acid = WHEN THE RATIO OF H+ IS GREATER THAN OH- IN AN AQUEOUS SOLUTION

Base = WHEN THE RATIO OF OH- IS GREATER THAN H+ IN AN AQUEOUS SOLUTION

Decomposition - breakdown of larger molecules into its parts

Synthesis - combination of smaller molecules into a larger

Single Replacement - one molecule remains and another is recombined

Double Replacement - both molecules rearrange and swap components