THE PERIODIC TABLE

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Across
  1. 2. colorless, odorless reactive gas
  2. 3. appears between bromine and fluorine in the periodic table
  3. 5. it forms about 78% of earths atmosphere
  4. 6. the most reactive out of all elements
  5. 7. change when objects or substances undergo a change
  6. 10. an element forming black crystals and violet vapor
Down
  1. 1. highly flammable gas
  2. 3. change a substance that combines with another to form a new substance
  3. 4. a nonmetallic solid
  4. 8. nonmetal that has two main forms(atomic number 6)
  5. 9. lightest member of the noble gas