Chemistry

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