Classification of Matter

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