Physical Science Chapter 2 Vocab

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