Periodic Table

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Across
  1. 4. substances that exists in a fluid state at standard temperature and pressure
  2. 6. six chemical elements in group 2
  3. 7. six highly reactive electronegative non-metals
  4. 8. number of protons+neutrons
  5. 9. chemical elements in groups 3-12
  6. 10. disordered particles with no fixed shape or volume at standard temperature and pressure
Down
  1. 1. number of protons=number of electrons
  2. 2. seven chemical elements in group 18
  3. 3. elements lithium,sodium,potassium,rubidium,cesium,and francium
  4. 5. a group of chemical elements that exhibits a mixture of physical and chemical properties