Chemistry Revision

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Across
  1. 1. Scale used to measure acidity or alkalinity
  2. 2. Substance with pH less than 7
  3. 6. Substance made from one type of atom
  4. 7. Element essential for strong bones and teeth
  5. 10. Substance made from two or more elements chemically combined
  6. 13. Element important for muscle contraction and heart function
  7. 14. Particle with no charge
Down
  1. 1. A type of change that does not form a new substance
  2. 2. Smallest unit of an element that retains its properties
  3. 3. Element required for oxygen transport in the blood
  4. 4. A type of change that produces a new substance
  5. 5. Substance with pH greater than 7
  6. 8. Element that helps regulate fluid balance and nerve function in the body
  7. 9. Charged atom or molecule
  8. 11. Group of atoms bonded together
  9. 12. Element needed for enzyme activity and muscle function
  10. 13. Positively charged particle