Across
- 4. Negatively charged particle
- 6. Most reactive metal in reactivity series
- 8. Gas released when metal reacts with acid
- 9. An inert metal that resists corrosion
Down
- 1. Metals form these when they react with oxygen
- 2. Vertical columns in periodic table
- 3. Horizontal rows in periodic table
- 5. Subatomic particle with a positive charge
- 7. The symbol for this element is Pb