matter and chemical change crossword

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Across
  1. 3. Most reactive non metals
  2. 5. Indicates the # of protons or electrons in an electrically neutral atom
  3. 6. Reacts eith water or air
  4. 7. Change in colour
  5. 11. Mixture where tiny particles of one substance is held witin another
  6. 12. Shiny
  7. 13. Some or more particles that can be seen and be separted
  8. 14. A substance formed by 2 or more elements
  9. 16. Most chemically reactive with air or water
  10. 18. Soild and Dull
  11. 19. Have both metallic and non metallic properties
Down
  1. 1. Ver stable and non reactive
  2. 2. You can separate the end product
  3. 4. Classifed into an element or compound
  4. 8. Coludy mixture, where the particles are suspended and difficlut to separate
  5. 9. The state of matter depends on temperture
  6. 10. Not separte visibly, as one is dissolved in another
  7. 15. Matter that cannot be broken down into any simpler substance
  8. 16. The total mass of all protons and neutrons in the nucleus
  9. 17. Anything that has mass and occupies space