CAUTION: The following activity needs the teacher’s assistance. It would be better if students wear eye protection.
Hold any of the samples taken above with a pair of tongs and try burning over a flame. Repeat with the other metal samples.
Collect the product if formed.
Let the products and the metal surface cool down.
Which metals burn easily?
- ✅ Answer: Sodium.
- ✅ Answer: Yellow.
- ✅ Answer: Silver white.
- ✅ Answer: Na > Mg > Al > Zn > Fe > Pb > Cu
- ✅ Answer: Sodium oxide is soluble in water. Other metal oxides are insoluble.