The 20 science elemets

123456789
Across
  1. 4. we breath this everyday
  2. 7. Number 6 on periodic table
  3. 8. Number one of periodic table
  4. 9. letters are Ag
Down
  1. 1. used to clean pools/in pools
  2. 2. yellow substance used for guns or ammo
  3. 3. number 5 on periodic table
  4. 5. initials N and is the name of a US coin
  5. 6. worth lots of money and its used for flexing
  6. 8. Used to fill balloons up that float in the sky