1. Vocabulary

2. Buoyancy the ability or tendency to float in water or air or some other fluid.

3. Physical Properties Properties that can be observed and measured

4. Chemical Properties Ability of a substance to react with other materials to form new substances.

5. Density A Physical Property- The amount of mass that fits in a given volume

6. Texture How the surface of a substance feels

7. Ductility Ability of a substance to be pulled into long threads

8. Mixture Two or more substances that are not chemically combined

9. Solution A mixture when the particles are mixed evenly

10. Reactivity Ability of a substance to go through a chemical change when it interacts with another substance.

11. Suspension A mixture that contain particles large enough to be seen. Filter paper will separate the particles.

12. Colloid Suspensions not easily filtered because of the size of the particles. Fog is a colloid of water Droplets in a gas that are so tiny they do not fall to the ground.

13. Combustibility Ability to burn

14. Decomposition reaction

15. Solvent The liquid in which something is dissolved