Across
- 3. when something becomes different over time
- 6. when something stays mostly the same over time
- 8. a heating unit that stores and warms water
- 9. a measure of how hot or cold something is
- 10. a small part that is meant to show what the whole is like
- 11. a group of atoms joined together in a particular way
- 13. to reach a conclusion using evidence and reasoning
- 16. the ability to make things move or change
- 17. to move from one object to another or one place to another
Down
- 1. water that is underground
- 2. the total kinetic energy of all the molecules that make up a sample
- 4. anything that has mass and takes up space
- 5. the energy that an object has because it is moving
- 7. a number that summarizes a set of data and that can be computed by adding all the numbers in a list and then dividing by the number of numbers in the list
- 12. a balanced state in which a system is stable, such as when two or more samples are at the same temperature
- 14. the moment when two objects hit each other
- 15. a set of interacting parts forming a complex whole