Chemistry

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Across
  1. 3. made up of only one type of atom
  2. 4. element combined with any element
  3. 9. colour of universal indicator in acid
  4. 11. positive partials in an atom
  5. 12. chemical symbol for calcium
  6. 13. has a ph scale higher than 7
Down
  1. 1. colour of universal indicator in alkali
  2. 2. nonmetal
  3. 3. negative particles in an atom
  4. 5. measure how acids or alkali substances
  5. 6. ph scale equal to 7
  6. 7. colour of universal indicator in neutral
  7. 8. particles are fixed together
  8. 10. has a ph scale less than 7
  9. 14. is smallest parietal of any element