1. Chemical Interactions Vocabulary

2. Investigation #4 Kinetic Energy

3. 1. Matter (Materials) Anything with a measureable mass and measureable volume.

4. 2. Particle The smallest piece of any substance.

5. 3. Expansion An increase in volume (size).

6. 4. Compression A reduction in volume (size) as a result of applied pressure or an applied force.

7. 5. Solid phase of matter that has definite volume and definite shape. The particles of a solid are tightly bonded (stuck together) and cannot move around.

8. 6. Liquid A phase of matter that has definite volume but no definite shape. Particles of liquid are loosely bonded (stuck together) but can flow over and around one another.

9. 7. Gas A phase of matter that has no definite shape or volume. Particles of a gas fly independently through space.

10. 8. Contraction A reduction in volume (size) as a result of the reduction of kinetic energy.

11. 9. Kinetic Energy Energy of motion.

12. 10. Temperature The average kinetic energy in a system. Put this together: This is not a measure of heat! Heat is a type of energy (thermal) that causes particles to move (kinetic). The higher the amount of energy, the faster the particles move; this equals a higher temperature. Not all particles in the system will move at the exact same speed. A thermometer measures the average motion; temperature is an average, not an exact quantity.

13. 11. Thermometer A scientific instrument used to measure the average amount of kinetic energy in a system..