Matter and Interactions

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Across
  1. 2. changes a substance from a gas to a liquid
  2. 5. anything that has mass and takes up space
  3. 7. the amount of matter in an object
  4. 10. properties characteristics of a substance that can be observed or measured without changing the substance into something else (Examples: color, texture, size, shape, smell, boiling point, freezing point, melting point)
  5. 11. the ability of a substance to combine chemically with another substance
  6. 12. property determined by a substance ability to react with other substances (the ability to react with air, water/acids, or catch fire)
  7. 14. when the temperature of a material increases, its particles move faster and spread out making it expand
  8. 17. the amount of space that an object takes up
  9. 18. the concentration of matter in an object
  10. 20. a measure of the pull of gravity on an object
Down
  1. 1. the ability to burn
  2. 3. does not have a definite shape or volume
  3. 4. change a change that occurs without the identity of a substance; no new substance are formed
  4. 6. occurs when particles escape from a non boiling liquid and become a gas
  5. 7. point the temperature at which a solid becomes a liquid.
  6. 8. the principle that properties such as mass, volume and number remain the same despite changes in the forms of objects
  7. 9. has a definite volume but no definite shape
  8. 13. change a change that occurs that does change the identity of a substance; something new is formed
  9. 15. has a definite shape and a definite volume
  10. 16. when the temperature of a material decreases, its particles move slower and come closer together making it contract
  11. 19. point the temperature at which a liquid changes to a gas