Across
- 2. the things we can change in an experiment
- 6. full of tiny holes
- 8. energy of motion
- 10. a measure of how hot or cold something is
- 11. the process of one substance taking in something form another substance
- 13. gas turning into liquid
- 15. the energy that comes from the movement of molecules in a substance
- 16. a system that does not allow matter to enter and exit
- 17. the smallest unit of matter
- 18. 2 or more atoms bonded together
Down
- 1. the variable measured in an experiment
- 3. liquid turning into gas
- 4. the energy transferred between objects that are different temperatures
- 5. transfer of energy as heat through a material
- 7. a set of things working together
- 9. the variable changed in an experiment
- 12. representation of something that we use to study
- 14. a system that allows matter to enter and exit