| Term | Definition |
| physical properties | properties that can be observed by or measured without changing of an object, or any part of the materials it is made of, into something else |
| texture | an observable phisical property: how the surface of a substance feels |
| ductility | the abitilty of a substance to be pulled into thin threads without breaking |
| density | the amount of mass in a given volume |
| buoyancy | the ability to float in a liquid or rise in a gas |
| chemical property | a property that describes the ability of a substance to react with other materials and form new substances |
| combustability | the ability to burn |
| reativity | the ability of a substance to go through a chemical change |
| stability | the condition where a substance does not go through chemical changes easily |
| mixture | a combination of 2 or more pure substances that are not chemically combined with each other |
| solution | a mixture in which the particles of each substance are mixed evenly |
| suspension | a mixture that contains particles that are large enogh to be seen and can be seperated from the mixture by using filter paper |
| colliod | a suspension that isn't easily seperated because of the small size of the particles |