Science crossword

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Across
  1. 3. Alkali metals have ___ melting points
  2. 5. What determines the order of elements in the periodic table
  3. 7. The group 7 elements are all ________ non-metals
  4. 10. The amount of valence electrons in group 5
Down
  1. 1. Halogens are ____ conductors of heat
  2. 2. Atomic number is 9
  3. 4. Noble gases are ________
  4. 6. The maximum electrons in shell 1
  5. 8. Atomic number is 20
  6. 9. What is the atomic number of oxygen in the periodic table