Across
- 3. The horizontal rows on the periodic table.
- 4. neutral particles found in the nucleus.
- 5. Something made up of 2 or more different elements.
- 7. Positively charged particles.
- 9. Two or more atoms chemically bonded together.
- 10. The building blocks of matter.
- 12. Negatively charged particles.
- 13. 2 of the same type of element bonded.
- 15. Where the protons and neutrons are found in an atom.
Down
- 1. Place where all the elements are arranged.
- 2. Atoms that are all the same.
- 6. Anything that has mass or takes up space.
- 8. Cannot be broken down into simpler substances.
- 11. The vertical rows on the periodic table.
- 14. 2 or more things combined without chemically bonding