Chapter 2 Vocabulary

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Across
  1. 3. the measure of the amount of matter in an object
  2. 4. the state of matter in which particles are far apart, move rapidly, and have little interaction with each other
  3. 6. a pure substance consisting of atoms of two ormore elements that are chemically combined in a fixed ratio
  4. 10. a gas-like state of matter, formed at very high temperatures, that consists of high-energy ions and free electrons
  5. 11. a mixture that does not have a uniform appearence since the combined substances are unevenly distributed
  6. 16. a model that states that all physcial matter exists in the form of particles
  7. 17. the space enclosed or occupied by an object
  8. 19. the mass per unit volume of an object
Down
  1. 1. a material made of only one kind of element or compound
  2. 2. the law that states that the masses of chemical substances combine in definite, characteristic integer ratios when forming compounds
  3. 5. a mixture that has a uniform appearence throughout; also known as a solution, especially of a solid dissolved in a liquid
  4. 7. anything that has mass and occupies space
  5. 8. the state of matter in which particles are close together but able to move around
  6. 9. a pure substance that consists of atoms with the same atomic number
  7. 12. the force of gravity acting on the matter in an object
  8. 13. a particle consisting of two or more atoms covalently bonded together
  9. 14. that state of mater in which particles vibrate in fixed posistions, giving a substance a fixed shape and volume
  10. 15. the building block of all matter; consists of protons, electrons, and (usually) neutrons
  11. 18. a physical combination of two or more substances in a changeable ratio