Matter project

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Across
  1. 6. The number of protons and electrons
  2. 9. represents the formula for a chemical
  3. 10. a number under an element that is multiplied by said element
  4. 11. a type of change that changes the chemical bonds
  5. 16. tightly bound atoms
  6. 17. solid liquid or gas
  7. 19. When liquids gets so hot that it turns into gas
  8. 20. a shortened name for an element used on the periodic table
Down
  1. 1. A type of change that does not affect the chemical bonds
  2. 2. The number at the start of a formula that is multiplied by all other element numbers.
  3. 3. A group of bounded atoms
  4. 4. when a solid is formed inside a liquid.
  5. 5. the smallest unit of measurement
  6. 7. only has one type of atom
  7. 8. fills up container with weakly bound atoms
  8. 12. the chemical bonds of an element
  9. 13. when liquids cool off and turn back into liquid form
  10. 14. A group of 2 or more different elements
  11. 15. The number of neutrons in an element
  12. 18. very loose atoms