Science review

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Across
  1. 3. number the total number of protons
  2. 8. two or more atoms bonded together
  3. 11. This high energy subatomic particle is negatively charged
  4. 17. any element that insulates instead of conducts, is dull and brittle
  5. 18. this subatomic particle has a neutral charge
  6. 19. a word that describes low luster
Down
  1. 1. The most basic particle of an element
  2. 2. able to be bent or shaped without breaking
  3. 4. an atom that has lost or gained an electron, making it charged instead of neutral
  4. 5. the one or two letter representation of an element's name
  5. 6. mass The sum of protons plus neutrons
  6. 7. cloud the area outside the nucleus of an atom, made of energy levels
  7. 9. the rows on a periodic table that show how many energy levels an element has
  8. 10. the columns on a periodic table that show how many valence electrons an element has
  9. 12. the type of change that alters a compound's identity
  10. 13. a substance made of two or more KINDS of elements
  11. 14. this positively charged subatomic particle is in the nucleus
  12. 15. any element with high luster and conductivity, that is malleable when bent
  13. 16. the mass of an object divided by its volume