Chemistry

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Across
  1. 5. Makes up 78% of the air we breathe
  2. 7. the substance in which the solute dissolves
  3. 8. Tiny particles that all matter is made of
  4. 9. Negatively charged subatomic particles
  5. 11. A chemical substance that is present at the start of a chemical reaction.
Down
  1. 1. The study of what substances are made of
  2. 2. A mixture when one substance dissolves another
  3. 3. Building blocks of protein
  4. 4. Mixture of metals
  5. 6. The Centre of an atom
  6. 10. The first column on the periodic table