Metals and Non-metals | Class 10 | Activity 3.9 with solution

Metals and Non-metals | Activities in Text Book with Solution

Activity 3.9 

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.

What flame colour did you observe when the metal burnt?

• ✅ Answer: Yellow.

How does the metal surface appear after burning?

• ✅ Answer: Silver white.

Arrange the metals in the decreasing order of their reactivity towards oxygen.

• ✅ Answer: Na > Mg > Al > Zn > Fe > Pb > Cu

Are the products soluble in water?

• ✅ Answer: Sodium oxide is soluble in water. Other metal oxides are insoluble.

• Activity 3.1
• Activity 3.2
• Activity 3.3
• Activity 3.4
• Activity 3.5
• Activity 3.6
• Activity 3.7
• Activity 3.8
• Activity 3.9
• Activity 3.10
• Activity 3.11
• Activity 3.12
• Activity 3.13
• Activity 3.14

👉 Activities from Other Chapters

👉 Class 10: Notes, Presentations, Questions