Across
- 4. when something stays mostly the same over time
- 5. the ability to make things move or change
- 7. a group of atoms joined together in a particular way
- 9. a measure of how hot or cold something is
- 10. A number that represents the middle value in a group
- 11. energy the total kinetic energy of all the molecules that make up a sample
- 12. anything that has mass and takes up space
- 15. water that is underground
- 16. When things are balanced or equal.
Down
- 1. a set of interacting parts forming a complex whole
- 2. When something becomes different over time
- 3. Energy of motion
- 6. To make a guess based on what you know.
- 8. a heating unit that stores and warms water
- 13. to move from one object to another or one place to another
- 14. The moment when two objects hit each other
