Matter and Chemical Change Crossword - Marcus Darichuk 9S

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Across
  1. 3. When matter changes from a gas to a solid
  2. 5. Workplace Hazardous Materials Information System
  3. 9. Most reactive metals
  4. 13. Represents the sum of the protons and neutrons of an atom
  5. 14. Also known as vaporization
  6. 16. Most reactive nonmetals
  7. 18. Occurs when two or more materials react to create a new material
  8. 19. When matter changes from a gas to a liquid
  9. 20. Researcher who suggested that electrons do not orbit randomly
  10. 21. When matter changes from a solid to a liquid
  11. 23. Have both metallic and nonmetallic properties
  12. 24. Shiny, Malleable, and ductile
  13. 25. The ability of a substance to allow electricity or heat to flow through it.
Down
  1. 1. The ability of a substance to dissolve in another substance
  2. 2. Material that can be a solid or gas, dull brittle elements
  3. 4. When a material moves from one state to another
  4. 6. Group of atoms acting as one
  5. 7. When matter changes directly from a solid from a gas
  6. 8. When matter changes from a liquid to a solid
  7. 10. Most stable and unreactive elements
  8. 11. Anything that has mass and occupies space
  9. 12. Pure substance formed as a result of the attraction between oppositely charged particles
  10. 15. another way to say the weight of an atom
  11. 17. Measurement for the weight of an atom
  12. 22. Fourth State of matter