Across
- 3. a set of interacting parts that form a whole.
- 7. instrument used to measure temperature.
- 9. energy total kinetic energy of an object.
- 11. moving from one thing to another.
- 12. when something becomes different over time.
- 13. when atoms are combined in a certain way.
- 14. when the whole system is stable.
Down
- 1. average kinetic energy of object's molecules.
- 2. anything that has mass and takes up space.
- 4. a type of energy: "energy of motion".
- 5. add up all numbers and divide by total.
- 6. the moment when two objects hit each other.
- 8. heating something to kill all bacteria.
- 10. the ability to make things move or change.