Across
- 2. Two or more things mixed together, but not chemically joined.
- 4. What holds atoms together.
- 7. Two or more atoms stuck together.
- 9. An atom or group of atoms with a charge.
- 10. A pure substance made of only one kind of atom.
- 12. Something you start with in a chemical reaction.
- 13. A way to measure how concentrated a solution is.
- 14. How much mass is packed into a certain space.
- 16. A substance with a pH less than 7.
- 17. The electrons in the outer shell of an atom.
- 18. A mixture where one thing dissolves in another.
- 19. A substance made from different elements joined together.
Down
- 1. Something made in a chemical reaction.
- 3. Atoms of the same element with different numbers of neutrons.
- 4. A substance with a pH greater than 7.
- 5. A particle with no charge in the nucleus.
- 6. A positive particle in the nucleus.
- 8. Connected to the repeating pattern on the periodic table.
- 11. The smallest piece of an element.
- 15. A negative particle that moves around the nucleus.