Physical Science Vocab 2

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Across
  1. 2. anything about a substance that can be observed or measured without altering its chemical composition
  2. 11. a pure substance that consists of atoms with the same atomic number
  3. 12. the state of matter in which particles vibrate in fixed positions, giving a substance a fixed shape and volume
  4. 13. the mass per unit volume of an object
  5. 14. 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
  6. 15. a gas-like state of matter, formed at very high temperatures, that consists of high-energy ions and free electrons
  7. 16. the change of state from a liquid to a gas (vapor)
  8. 18. the relatively fast form of vaporization in which the energy within a liquid creates higher pressure within the liquid than the air pressure outside the liquid
  9. 22. a material made of only one kind of element or compound
  10. 23. the force of gravity acting on the matter in an object
  11. 25. the law that state that the masses of chemical substances combine in definite, characteristic integer ratios when forming compounds
  12. 26. the space enclosed or occupied by an object
  13. 27. a particle consisting of two or more atoms covalently bonded together
  14. 28. the change of state from a solid to a liquid
  15. 30. the change in state directly from a gas (vapor) to a solid without condensing first
  16. 31. anything that has mass and occupies space
  17. 33. any change in matter that does not alter its chemical or nuclear composition
Down
  1. 1. the law that states that within a closed system, the total momentum remains constant
  2. 3. a mixture that has a uniform appearance throughout; also known as a solution, especially of a solid dissolved in a liquid
  3. 4. the change in state directly from a solid to a gas (vapor) without melting first
  4. 5. the change of state from a gas (vapor) to a liquid
  5. 6. the temperature at which a solid turns to a liquid
  6. 7. a model that states that all physical matter exists in the form of particles
  7. 8. a property of a substance that describes how its chemical identity changes in the presence of another substance or under certain conditions
  8. 9. the temperature at which a liquid starts to boil
  9. 10. the state of matter in which particles are far apart, move rapidly,
  10. 17. a change that alters the chemical composition of a substance
  11. 19. the change of state from a liquid to a solid
  12. 20. a mixture that does not have a uniform appearance since the combined substances are unevenly distributed
  13. 21. a physical combination of two or more substances in a changeable ratio
  14. 24. a pure substance consisting of atoms of two or more elements that are chemically combined in a fixed ratio
  15. 29. the state of matter in which particles are close together but able to move around
  16. 32. the measure of the amount of matter in an object
  17. 34. the building block of all matter; consists of protons, electrons, and (usually) neutrons