Scientific concepts crossword puzzle

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Across
  1. 3. A substance in milk that can be extracted to form plastic
  2. 7. Copper sulphate (CuSO4) is this color in solution
  3. 8. This is what a voltmeter measures
  4. 10. _______ rely on metal salts absorbing heat energy, then releasing it as light
  5. 12. Used to protect eyes in the lab
  6. 13. Electrochemistry studies the transfer of _______
Down
  1. 1. When a liquid is pulled through something without external force
  2. 2. Polymers are made up of many of these
  3. 4. Used to protect hands in lab
  4. 5. Batteries store this kind of energy
  5. 6. A polymer gel that contains water
  6. 9. In order to extract DNA, we must first break open ____
  7. 11. When two polymer strands bind together