Science Vocabulary 2

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Across
  1. 2. Distinct groups of two or more atoms
  2. 10. Is a pure substance consisting of atoms of two or more different elements that are chemically combined
  3. 11. Any change in matter that does not change the composition of the substance
  4. 12. State of matter in which the molecules of the substance are between a liquid and a gas
  5. 15. Change of state from a gas to a liquid
  6. 17. Amount of matter in an object
  7. 19. A material made of only one kind of element or compound; it is not a mixture
  8. 20. The building blocks of all matter
  9. 21. State of matter in which the molecules of the substance do not move/retrained
  10. 22. Temperature at which a liquid starts to boil
  11. 25. Change of state from a liquid to a vapor (gas)
  12. 28. Change of state from solid to liquid
  13. 29. Relatively slow form a vaporization in which particles on the surface of the liquid state obtain sufficient energy to change to the gaseous state through the random collisions with particles
  14. 30. They have a uniform appearance; also known as a solution
  15. 31. anything that has mass and occupies space
  16. 33. Relatively fast form of vaporization that as the substance is heated the particle's energy creates a pressure equal to the air pressure outside the liquid
Down
  1. 1. proportions The mass of a substance will continue to have the same whole numbered ratio.
  2. 2. A physical combination of two or more substances.
  3. 3. A change that alters the composition of the substance
  4. 4. States that all physical matter exists in the form of particles (atoms or molecules) in constant motion.
  5. 5. Anything about a substance that can be observed
  6. 6. Does not have a uniform appearance since the substances are unevenly distributed
  7. 7. Law that states that matter can not disappear, but changes states
  8. 8. The measure of gravity acting on the matter of an object.
  9. 9. Describes how a substance changes in the presence of another substance or under certain conditions
  10. 13. State of matter in which the molecules of the substance move wildly about
  11. 14. Change of state from a liquid to a solid
  12. 16. Mass of matter contained within a particular volume
  13. 18. Change of state from a solid directly to a gas
  14. 23. Temperature at which a substance changes from a solid to a liquid
  15. 24. Change of state from a gas directly to a solid
  16. 26. Is a pure substance that consists of atoms with the same atomic number.
  17. 27. Space enclosed or occupied by an object
  18. 32. State of matter in which the molecules of the substance move but the movement is free but restricted