Across
- 3. The number of protons in the nucleus
- 5. Anything that has mass and volume
- 8. What something is made up of; DO NOT CHANGE
- 10. Negatively charged particles that spin outside the nucleus
- 11. Combinations of atoms (can be the same or different)
- 12. Made of a single type of atom
- 13. How much stuff something is made up of
Down
- 1. Made of protons and neutrons
- 2. A way to describe something; CAN CHANGE
- 3. Basic building block of all mater
- 4. Has NO charge
- 6. Caused by millions and millions of particles hitting against a surface
- 7. Positively charged particle
- 9. How much space something takes up