Physical & Chemical Changes

Edit Answers
12345678910111213141516171819202122232425262728
Across
  1. 2. Gas becoming a liquid.
  2. 4. Two atoms attracted to each other.
  3. 8. Molecules the only contain two atoms.
  4. 11. molecules with two or more atoms bonded
  5. 13. Oxygen, carbon and helium are all _______.
  6. 14. Damage to metal by the environment.
  7. 16. Made of protons, neutrons and electrons.
  8. 18. Gas that is dangerous to breathe in.
  9. 21. Reacting substances must collide or come into contact.
  10. 22. Two or more atoms bonded together.
  11. 26. Solid to gas or gas to solid.
  12. 27. Another word for evaporation.
  13. 28. Chain molecule of simpler repeating units.
Down
  1. 1. Solid to a liquid by heat.
  2. 2. Produces new chemicals.
  3. 3. Changing a liquid into a gas.
  4. 5. Written on the right side of the chemical equation.
  5. 6. A substance that increases the rate of a chemical reaction.
  6. 7. Molecules with the same atoms bonded.
  7. 9. A type of catalyst.
  8. 10. Focusing really hard.
  9. 11. group of two or more atoms that are bonded
  10. 12. Horizontal rows of elements.
  11. 15. Gas form of a solid or liquid,e.g.water vapour.
  12. 17. All elements on a table.
  13. 19. One single atom.
  14. 20. Columns of elements.
  15. 23. Written on the right side of the chemical equation.
  16. 24. Arrangement of particles in a regular pattern.
  17. 25. Easily becomes a gas.