Chapter 2 Vocab Words

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Across
  1. 2. anything about a substance that can be observed or measured without altering its chemical composition
  2. 4. the relatively slow form of vaporization in which liquid particles obtain sufficient energy to change to the gaseous state through the random collisions of particles
  3. 7. the change of state from a solid to a liquid
  4. 8. a model that states that all physical matter exists in the form of particles
  5. 9. the change in state directly from a gas to a solid without condensing first
  6. 14. the change of state from a solid to a liquid
  7. 16. the change of state from a liquid to a gas
  8. 18. a pure substance that consists of atoms with the same atomic number
  9. 19. the state of matter in which particles are far apart, move rapidly, and have little interaction with each other
  10. 21. the relatiely fast form of vaporization in which the energyy within a liquid creates higher pressure within the liquid than the air pressure outisde the liquid
  11. 22. the state of matter in which particles are close together but able to move around
  12. 23. a physical combination of two or more substances in a changeable ratio
  13. 25. a particle consisting of two or more atoms covalently bonded together
  14. 26. a gas-like state of matter, formed at very high temperature, that consists of high-energy ions and free electrons
  15. 27. the mass per unit volume of an object
  16. 28. a mixture that has a uniform appearance throughout;also known as a solution, especially of a solid dissolved in a liquid
  17. 31. a property of a substance that describes how its chemical identity changes in the presence of another substances into one or more new substances
  18. 32. the change in state directly from a solid to a gas without melting point
  19. 33. a material made of only one kind of element or compound
Down
  1. 1. the temperature at which a liquid starts to boil
  2. 3. the law that states that the masses of chemical substances combine in definite, characteristic integer ratios when forming compounds
  3. 5. a mixture that does not have a uniform appearance since the combined substances are unevenly distributed
  4. 6. the buidling block of all matter;consists of protons,electrons, and (usually)neutrons
  5. 10. the measurement of the amount of matter in an object
  6. 11. a pure substance consisting of atoms of two or more elements that are chemically combined in a fixed ratio
  7. 12. a change that alters the chemical composition of a substance
  8. 13. any change in matter that does not alter its chemical or nuclear composition
  9. 15. the law that states that matter can neither be created nor destroyed, but can only change from
  10. 16. the space enclosed or occupied by an object
  11. 17. the force of gravity acting on the matter in an object
  12. 20. the state of matter in which particles vibrate in fixed positions, giving a substance a fixed shape and volume
  13. 24. anything that has mass and occupies space
  14. 29. the change of state from a gas to a liquid
  15. 30. the temperature at which a solid turns to a liquid