| A | B |
|---|
| Pure Substance | Mater that always has exactly the same composition |
| Element | A substance that cannot be broken down into simpler substances |
| Atom | The smallest particle of an element. |
| Compound | A substance that is made from two or more simpler substances and can be broken down into those simpler substances. |
| Heterogeneous Mixture | The parts of the mixture are noticeably different from one another. |
| Homogeneous Mixture | The substances are so evenly distributed that it is difficult to distinguish one substance in the mixture from another. |
| Solution | When substances dissove and form a homogeneous mixture |
| Suspension | A heterogeneous mixture that separates into layers over time. |
| Colloid | Contains some particles that are intermediate in size between the small particles in a solution and the larger particlesin a suspension. |
| Viscosity | resistance to flowing |
| Physical Property | Any characteristic of a material that can be observed or measured without chaning the composition of the substance. |
| Conductivity | Ability to allow heat to flow |
| Malleability | Ability of a solid to be hammered without shattering |
| density | Ratio of the mass of a substance to its volume |
| filtration | Process the separates materials based on the size of their particles |
| Distillation | Process that separates the substances in a solution based on their boiling points. |
| Physical Change | Occurs when some of the properties of a material change, but the substances in the material remain the same. |
