Across
- 4. This group of elements includes sodium and potassium.
- 5. This element has the atomic number 26 and is used in construction
- 6. This element is a metal with atomic number 12 and is used in the production of aluminum
- 8. The element symbol "H" is the lightest element
- 9. This noble gas is colorless, odorless, and used in neon signs
Down
- 1. has the most negative electron gain enthalpy
- 2. This element, symbol "He," is lighter than air and is used in balloons
- 3. This element is used in batteries and has the symbol "Li.
- 7. This non-metal element has atomic number 7 and is essential for life
- 10. This element has the symbol "O" and is essential for breathing