chemical interactions vocabulary. investigation #4 kinetic energy
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Chemical Interactions
Vocabulary
Investigation #4
Kinetic Energy
1. Matter
• (Materials) Anything with a measureable mass and measureable volume.
2. Particle
• The smallest piece of any substance.
3. Expansion
• An increase in volume (size).
4. Compression
• A reduction in volume (size) as a result of applied pressure or an applied force.
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.
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.
7. Gas
• A phase of matter that has no definite shape or volume. Particles of a gas fly independently through space.
8. Contraction
• A reduction in volume (size) as a result of the reduction of kinetic energy.
9. Kinetic Energy
• Energy of motion.
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.
11. Thermometer
• A scientific instrument used to measure the average amount of kinetic energy in a system. .
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