Science Practice Quiz 5th Grade

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Across
  1. 3. Materials ____ as they get hotter
  2. 9. As long as conditions such as ____ do not change, the density of a substance does not change
  3. 14. When molecules are linked in organized positions, a _____ results
  4. 15. We know of how many elements
  5. 16. Particles that contain more than one atom joined together are called
  6. 17. A measure of how much space a sample of matter takes up
Down
  1. 1. When a change of _____ occurs, the identity of the substance stays the same
  2. 2. The basic building blocks of all matter are
  3. 4. The number of ____ in an atom determines what element it is
  4. 5. is made up of molecules that have different kinds of atoms joined together
  5. 6. The melting point is also called the freezing point
  6. 7. This comes from petroleum
  7. 8. About 3/4 of the elements are
  8. 10. Solids keep their ___
  9. 11. Petroleum is a complex mixture of what?
  10. 12. When the temperature of a material increases, its particles move ______
  11. 13. As more matter gets packed into the same amount of space, the material's density does what?
  12. 16. A measure of the amount of matter in an object is?