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