Chemistry

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Across
  1. 3. when the shape size or phase of a substance changes
  2. 4. pure substance made of only one kind of atom
  3. 6. the smallest amount of a substance you can have
  4. 8. a chart where elements are arranged in order of atomic number
  5. 12. two or more elements chemically combined
  6. 14. particle with a neutral charge found in the nucleus of an atom
  7. 15. anything that has mass and takes up space
  8. 16. two or more substances combined but easily separated
Down
  1. 1. states that matter cannot be created or destroyed
  2. 2. a mixture where you are able to see the individual parts
  3. 5. when a completely new substance is formed
  4. 7. a chemical reaction where iron combines with oxygen in moist environments
  5. 9. negatively charged particles found outside the nucleus
  6. 10. the smallest amount of matter
  7. 11. a mixture that looks the same throughout
  8. 13. positively charged particle in the nucleus of an atom