HW 2

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Across
  1. 4. the simplest chemical substances that cannot be changed in a chemical reaction or by any chemical means.
  2. 6. happens when a gas is transformed into a liquid.
  3. 11. is the smallest unit of matter
  4. 13. the process of converting a liquid to a gas
  5. 14. describe how big or small an object is
  6. 16. it has a indefinite shape and indefinite volume
  7. 17. what do you call the mixture of two or more substances
  8. 18. it is composed of tightly packed particles
  9. 19. Amount of matter present in an object.
  10. 20. negatively charged particles
Down
  1. 1. anything that has mass and takes up space
  2. 2. The ability of materials to be easily broken down into pieces
  3. 3. substance made from two or more elements.
  4. 5. consists of highly charged particles with extremely high kinetic energy.
  5. 7. positively charged particles
  6. 8. an electrically neutral subatomic particle of an atom
  7. 9. what is the matter that has definite shape and size
  8. 10. combination of atoms
  9. 12. occurs when heat is applied to a solid.
  10. 15. amount of space occupied by matter