Across
- 5. Matter that has a definite shape and a definite volume
- 7. The change of state of a liquid to a gas
- 11. The region at the center of an atom that contains most of the mass
- 12. The energy of an object due to motion (two words)
- 13. One of two or more atoms of an element the had the same number of protons but a different number of neutrons
- 17. Tools used to measure the volume of a liquid
- 19. An atom that has a charge because it has gained or lost electrons
- 20. Anything that takes up space and has mass
- 21. A positively charged particle in the nucleus of an atom
Down
- 1. A measurement of a liquid's resistance to flow
- 2. A possible explanation form and observation that can be tested
- 3. The investigation and exploration of natural events
- 4. A tool used to measure the mass of an object
- 6. Matter with a definite volume but no definite shape
- 8. A tool used to measure the temperature of a substance
- 9. An uncharged particle in the nucleus of an atom
- 10. A substance made of only one kind of atom
- 14. Matter with no definite shape and no definite volume
- 15. A rule that describes a repeatable pattern
- 16. A negatively charged particle that occupies the space outside the nucleus
- 18. A small particle that is the building block of matter