Matter & Energy

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Across
  1. 5. positive charge in the atom
  2. 6. protons plus neutrons
  3. 7. Neutral charge in the atom
  4. 9. the number of electrons in the outermost energy level of the electron cloud
  5. 10. number of protons in an atom and can be used to identify an element
  6. 15. mix of metals and non metals
  7. 16. rows of the periodic table
Down
  1. 1. negative charge in the atom
  2. 2. holds electrons
  3. 3. how much space an object takes up
  4. 4. mostly gases but include dull, brittle solids and display insulating properties
  5. 8. holds the protons and the neutrons
  6. 11. greatest luster, the best conductivity, and greatest malleability
  7. 12. building block for all matter
  8. 13. everything like air and water, has volume
  9. 14. columns on the periodic table of elements