1. Lonely man + lonely woman = happy couple + Metal + oxygen → Metal Oxide Example: Cu + O 2 → CuO or balanced…… 2Cu + O 2 → 2CuO Cu + Cu + O 2 → CuO + CuO Copper + oxygen → Copper Oxide

2. + Mg + O 2 → MgO or balanced…… 2Mg + O 2 → 2MgO Mg + Mg + O 2 → MgO + MgO Magnesium + oxygen → Magnesium Oxide

3. + Li + O 2 → Li 2 O or balanced…… 4Li + O 2 → 2Li 2 O Li + Li + Li + Li + O 2 → Li 2 O + Li 2 O Lithium + oxygen → Lithium Oxide

4. + Lithium + oxygen → Lithium Oxide Sodium + oxygen → Iron II + oxygen → Aluminium + oxygen → Sodium Oxide Iron II Oxide Did it react ?????? Nope !!!!

5. + +

6. + + Metal + water (H – OH) Metal Hydroxide + Hydrogen Ca + H 2 O → Ca(OH) 2 + H 2 or balanced…. Calcium + water Calcium Hydroxide + Hydrogen Ca + 2 H 2 O → Ca(OH) 2 + H 2 Ca + HHO + HHO = Ca OH OH + HH

7. + + Metal + water (H – OH) Metal Hydroxide + Hydrogen Na + H 2 O → NaOH + H 2 or balanced…. Sodium + water Sodium Hydroxide + Hydrogen 2Na + 2H 2 O → 2NaOH + H 2 Na + Na + HHO + HHO = Na OH + Na OH + HH

8. + +

9. + + AB + CD = AD + CB Calcium Carbonate + Hydrochloric acid Calcium Chloride + Water + Carbon Dioxide

10. + + AB + CD = AD + CB HCl + NaOH H OH + NaCl