science 3.2

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Across
  1. 1. particals move freely
  2. 6. its a hard substance
  3. 9. the ability of a substance to combine with another substance
  4. 11. a change in matter
  5. 13. the smallest type of mass in the world
  6. 17. the total mass before and after a chemical reaction
  7. 18. some nfl players use it wrongly sometimes
  8. 19. what happens when water and oxygen
  9. 20. this determines the strenght of the attraction
Down
  1. 2. the ability of a material to dissolve
  2. 3. happens to a marshmallow after it burns
  3. 4. articles of matter
  4. 5. Pokemon cards use it
  5. 7. it makes things wet
  6. 8. the amount of matter an object
  7. 10. it happens to trees in the fall
  8. 12. happens to slat in water
  9. 14. a change is size,shape,and form
  10. 15. the mass per unit
  11. 16. things that move back and forth in all directions