MATTER UNIT

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Across
  1. 5. a substance that you cannot tell its ingredients apart
  2. 10. another word for ingredients
  3. 12. negatively charged sub-particles
  4. 13. two or more elements combined
  5. 15. this element has 3p, 4n, 3e
  6. 18. are the last group of the periodic table (18) and are stable elements
  7. 21. neutral charged sub-particles
  8. 22. a material that is man-made
Down
  1. 1. the process where organisms use carbon dioxide, water and light energy to make glucose
  2. 2. a substance made of only one type of atom
  3. 3. another word for result
  4. 4. a substance whose ingredients you can tell apart
  5. 6. another word for sugar
  6. 7. are the 1st group of the periodic table(1) and these are very unstable and reactive
  7. 8. this element has 6p, 6n, 6e
  8. 9. when a substance changes only its appearance
  9. 11. positively charged sub-particles
  10. 14. anything that has mass and takes up space
  11. 16. is the symbol for mercury
  12. 17. this model contains each element and properties
  13. 19. is the element represented by the chemical symbol k
  14. 20. when a substance changes the way it looks and its composition
  15. 21. is the chemical symbol for sodium
  16. 23. a symbol used to represent equal in a chemical equation