Across
- 4. the atomic mass after it is rounded
- 7. The other part in the nucleus with the proton
- 10. a form of matter that cannot change shape, mass, or volume
- 11. A part of an atom that hangs around the outside of the nucleus
- 12. The number that tells you how many protons and electrons are in an atom
- 13. A form of matter that can change its volume, mass, and shape
Down
- 1. The thing in the nucleus that decides what kind of atom it is
- 2. what stuff is made of
- 3. A form of matter that can change its shape but not mass or volume
- 5. anything that has mass and volume
- 6. Atoms make this up
- 8. the amount of space something takes up
- 9. The smallest unit of matter
- 12. The number you have to round and subtract to find the number of neutrons