1. Energy: The ability to do work or cause change.
2. Matter: Anything that has mass and takes up space.
3. Potential energy: Energy that an object has due to its position or condition.
4. Kinetic energy: Energy that an object has due to its motion.
5. Temperature: A measure of how hot or cold something is.
6. Solid: A state of matter that has a definite shape and volume.
7. Liquid: A state of matter that has a definite volume but takes the shape of its container.
8. Gas: A state of matter that has neither a definite shape nor volume.
9. Evaporation: The process of a liquid turning into a gas.
10. Condensation: The process of a gas turning into a liquid.
11. Melting: The process of a solid turning into a liquid.
12. Freezing: The process of a liquid turning into a solid.
13. Boiling: The process of a liquid turning into a gas at a specific temperature.
14. Sublimation: The process of a solid turning directly into a gas without becoming a liquid first.
15. Conservation: The principle that energy cannot be created or destroyed, only transferred or transformed.Â