Unit 2 Test Review

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Across
  1. 4. two or more atoms that are held together by chemical bonds and act as a unit
  2. 8. one of two or more atoms of an element having the same number of protons, but a different number of neutrons
  3. 11. single; separate
  4. 12. matter that has no definite volume and no definite shape
  5. 14. measure of the average kinetic energy of all the particles in an object
  6. 15. mixture a mixture in which the substances are not evenly mixed
  7. 16. number the number of protons in the nucleus of an atom of an element
  8. 19. mixture a mixture in which two or more substances are evenly mixed, but not bonded together
  9. 23. region at the center of an atom that contains protons and neutrons
  10. 24. matter with a composition that is always the same
  11. 25. matter that can vary in composition
  12. 27. matter that has a definite volume and a definite shape
  13. 28. gas state of a substance that is normally a solid or a liquid at room temperature
  14. 29. anything that takes up space and has mass
Down
  1. 1. tension uneven forces acting on the particles on the surface of a liquid
  2. 2. positively charged particle in the nucleus of an atom
  3. 3. measure of the average kinetic energy of all the particles in an object
  4. 5. matter with a definite volume but no definite shape
  5. 6. substance made of two or more elements that are chemically joined in a specific combination
  6. 7. atom that has a charge because it has gained or lost electrons
  7. 9. substance made of only one kind of atom
  8. 10. cloud region surrounding an atom’s nucleus where one or more electrons are most likely to be found
  9. 13. small particle that is the building block of matter
  10. 17. electrical property of some objects that determines whether the object is positive, negative, or neutral
  11. 18. uncharged particle in the nucleus of an atom
  12. 20. negatively charged particle that occupies the space in an atom outside the nucleus
  13. 21. change a change in matter in which the substances that make up the matter change into other substances with different chemical and physical properties
  14. 22. anything that has mass and takes up space
  15. 26. measurement of a liquid’s resistance to flow