Across
- 3. A new substance made in a chemical reaction.
- 6. Type of change where the substance stays the same but is in a new form.
- 8. Central part of an atom.
- 9. Type of atom on the periodic table.
- 13. More than one atom chemically joined together.
- 15. Building block of all matter.
- 16. Positively charged part of an atom.
Down
- 1. Part of an atom which keeps it stable.
- 2. Can be atoms or molecules not chemically joined together.
- 4. A substance which reacts to produce a new substance.
- 5. Substance where the particles are all different from each other.
- 7. Substance where the particles are all the same (4,9).
- 10. Moves around the outside of an atom.
- 11. Number of electrons in the shell closest to the nucleus.
- 12. Made of more than one type of atom chemically joined together.
- 14. Type of change where the atoms rearrange into new substances.