Chapter 2 Physical Science Vocab

12345678910111213141516171819202122232425262728293031323334
Across
  1. 2. A pure substance consisting of atoms of two or more elements that are chemically combined in a fixed ratio
  2. 4. A pure substance that consists of atoms with the same atomic number
  3. 5. The change in state directly from a solid to a gas (vapor) without melting first
  4. 8. The force of gravity acting on the matter in an object
  5. 9. A property of a substance that describes how its chemical identity changes in the presence of another substance or under certain conditions
  6. 14. The change of state from a liquid to a solid
  7. 15. A change that alters the chemical composition of a substance
  8. 17. The law that states that matter can neither be created nor destroyed, but can only change form
  9. 22. A material made of only one kind of element or compound
  10. 25. A mixture that has a uniform appearance throughout; also known as a solution, especially of a solid dissolved in a liquid
  11. 27. Anything about a substance that can be observed or measured without altering its chemical composition
  12. 29. The change of state from a gas (vapor) to a liquid
  13. 32. A model that states that all physical matter exists in the form of particles
  14. 34. Anything that has mass and occupies space
Down
  1. 1. The law that states that the masses of chemical substances combine in definite, characteristic integer ratios when forming compounds
  2. 3. A particle consisting of two or more atoms; covalently bonded together
  3. 6. The temperature at which a liquid starts to boil
  4. 7. 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
  5. 10. Any change in matter that does not alter its chemical or nuclear composition
  6. 11. The relatively slow form of evaporation in which liquid particles obtain sufficient energy to change to the gaseous state through the randoms collisions of particles
  7. 12. A physical combination of two or more substances in a changeable ratio
  8. 13. The change of state from a liquid to a gas (vapor)
  9. 16. The mass per unit volume of an object
  10. 18. A mixture that does not have a uniform appearance since the combined substances are unevenly distributed
  11. 19. The change in state directly from a gas (vapor) to a solid without condensing first
  12. 20. The state of matter in which particles are far apart, move rapidly, and have little interaction with each other
  13. 21. The temperature at which a solid turns into a liquid
  14. 23. The space enclosed or occupied by an object
  15. 24. The change of state from a solid to a liquid
  16. 26. The state of matter in which particles vibrate in fixed positions, giving a substance a fixed shape and volume
  17. 28. A gas-like state of matter, formed at very high temperatures, that consists of high-energy ions and free electrons
  18. 30. The building block of all matter; consists of protons, electrons, and (usually) neutrons
  19. 31. The measure of the amount of matter in an object
  20. 33. The state of matter in which particles are close together but are able to move around