Across
- 1. Located in the nucleus with a positive charge
- 4. Only element that is liquid at room temperature
- 5. Group 17 on the periodic table
- 6. The 1st group on the periodic table
- 7. A crucial element in water and air
- 8. Located outside the nucleus with a negative charge
- 9. The diagram of atoms
- 10. This element can be considered an alkali metal or a halogen
Down
- 1. A row on the periodic table
- 2. The 18th group on the periodic table
- 3. This element is lighter than air and can be found in balloons
- 6. Metals that make up group 2 on the periodic table
- 11. A column on the periodic table