chemistry

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Across
  1. 3. the element that has 17 protons and electrons and 18 neutrons
  2. 6. one of the five senses you should never use within a lab
  3. 7. it it will relite
Down
  1. 1. dioxide the gas that if you put a burning splint in it will extinguish
  2. 2. one of the 5 senses that you are encouraged to use
  3. 4. the gas that if you put a slightly burning splint
  4. 5. number the number in the top right of any element on the periodic table