Chemistry

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Across
  1. 2. element number 1 on the periodic table
  2. 3. the change of state from gas to liquid
  3. 9. chemical that changes colour in an acid or base
  4. 10. property of a substance that causes burns to skin and eyes and damages other materials
  5. 12. can be formed into different shapes
Down
  1. 1. insoluble solid formed when soluble substances react together
  2. 4. another word for basic
  3. 5. calcium hydroxide, a clear and colourless liquid that turns milky when carbon dioxide is added
  4. 6. a space that contains no particles
  5. 7. substance that dissolves to form a solution
  6. 8. a substance that contains atoms of more than one element strongly held together
  7. 11. the highest and lowest values in a set of data