Extra Credit Crossword (Physical science)

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Across
  1. 2. Not metal
  2. 5. Negatively charged particle
  3. 6. Elements are organized on this table
  4. 8. Transfer of electrons
  5. 11. Iron, gold, silver etc.
  6. 13. Substance at end of chemical reaction
  7. 14. Energy is absorbed
  8. 16. Produced by taking/adding electrons from a neutral atom
  9. 17. Ability of a substance to react chemically with another substance
  10. 19. A compound is made from a simpler materials
  11. 21. Substance present at beginning of chemical reaction
  12. 23. Energy is expelled
  13. 24. Does the object float or sink? What is the objects __
Down
  1. 1. Sharing of electrons by atoms
  2. 3. Numbers and letters together to form a math problem
  3. 4. Same mass as proton but without electric charge
  4. 7. Positive and negative ions switch places
  5. 9. Compound is broken down into simpler compounds
  6. 10. Compound with carbon and hydrogen combine with oxygen gas to produce carbon dioxide and water
  7. 12. Result can be undone or returned back
  8. 15. result cannot be undone, changed at the molecular level
  9. 18. One element starts by itself but then replaces another
  10. 20. Subatomic particle
  11. 22. Atoms of the same element with different numbers of neutrons