| A | B |
|---|
| Pure Substance | matter that always has exactly the same composition |
| Element | a substance that cannot be broken down into simplier substances |
| Atom | the smallest particle of an element |
| Compound | a substance that is made from two or more simplier substances that operate together |
| Heterogeneous Mixture | a type of mixture in which the parts of the mixture are noticeably different from one another |
| Homogeneous Mixture | a type of mixture in which the substances are so evenly distributed that it is difficult to distinguish one substance in the mixtutre from another |
| Solution | a mixture that forms when substances dissolve and form a homogeneous mixture |
| Suspension | a heterogeneous mixture that separates into layers over time |
| Colloid | a minture that contains some particles that are intermediate in size between the small particles in a suspension |
| Bouyancy | the ability of a fluid to exert an upward force on an object placed in it |
| Bouyancy Force | an upward force acting on an object in a fluid |
| Archimedes Principle | the equivalence of the buoyant force on an object and the weight of the fluid displaced by the object |
