PS Ch 2 Vocab

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