Across
- 4. elements found on the left of the periodic table
- 6. the number of different types of chemical bond
- 7. elements found on the right of the periodic table
- 9. atoms .... electrons to form negative ions
- 10. when atoms lose electrons this type of ion is formed
- 12. if an atoms gains or loses electrons an ... is formed
Down
- 1. a particle with the same number of electrons and protons
- 2. negatively charged particle
- 3. the type of bonding where non-metal atoms share pairs of electrons
- 5. the strength of chemical bonds
- 8. the type of bonding in metals
- 11. the type of bond formed when oppositely charged ions attract