Periodic Table of Elements

12345678910111213
Across
  1. 3. The number of protons in the nucleus
  2. 5. Anything that has mass and volume
  3. 8. What something is made up of; DO NOT CHANGE
  4. 10. Negatively charged particles that spin outside the nucleus
  5. 11. Combinations of atoms (can be the same or different)
  6. 12. Made of a single type of atom
  7. 13. How much stuff something is made up of
Down
  1. 1. Made of protons and neutrons
  2. 2. A way to describe something; CAN CHANGE
  3. 3. Basic building block of all mater
  4. 4. Has NO charge
  5. 6. Caused by millions and millions of particles hitting against a surface
  6. 7. Positively charged particle
  7. 9. How much space something takes up