Chemistry

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Across
  1. 2. Type of structure found in sodium chloride (5)
  2. 4. Rate increases when particles collide more often (10)
  3. 5. Rearrangement of atoms in a chemical reaction (10)
  4. 8. that forms when metal reacts with oxygen (5)
  5. 9. Type of bonding involving shared pairs of electrons (9)
  6. 11. charged electrode in electrolysis (7)
  7. 12. Particle with no overall electrical charge (7)
  8. 13. Positively charged electrode in electrolysis (6)
  9. 14. Strong acid commonly used in laboratories (12)
  10. 15. Method used to test gases in reactions (4)
Down
  1. 1. that reacts with acids to form a salt (4)
  2. 3. Separation technique used for soluble solids (13)
  3. 6. of state from liquid to gas (11)
  4. 7. Energy required to start a chemical reaction (14)
  5. 10. Conservation principle involving mass (12)
  6. 11. Substance that speeds up a reaction without being used up (8)
  7. 12. Measurement of how acidic or alkaline a solution is (3)
  8. 13. Transfer of electrons during a reaction (9)
  9. 14. Formula showing simplest whole-number ratio of atoms (8)