NCERT Activity 3.7 Class 10 Science Explanation

In this activity, we will perform the same activities with non-metals as we have done with metals and observe their properties.

 

Aim of the activity

To study the Physical Properties of Non-Metals

Materials Required

    1. Carbon (coal or graphite)

    2. Iodine

    3. Sulphur

    4. Tools (hammer, knife, electric circuit, spirit lamp)

Procedure

We will follow the same procedure as we followed in activities from  3.1 to 3.6 for metals.

Observation 

Table

Element	Symbol	Type of surface	Hardness	Malleability	Ductility	Conductions		Sonority
						Heat	Electricity
Carbon Sulphur iodine	C S I	Non-lustorous	Soft & brittle	No No No	No No No	No No No	No No No	No No No

 

   Conclusion

 We can conclude that

    1.  Non-metals do not have luster except iodine.

    2.  Non-metals are soft and brittle.

    3.  They are neither malleable nor ductile.

   4. They are not good conductors of electricity (except graphite).

    5. They are not sonorous.

  So, non-metals have different physical properties compared to metals.

   Frequently Asked Questions

    1. What type of surface do non-metals have?

Answer – Most of the metals have a dull surface.

    2. Do all non-metals conduct electricity?

Answer – No, non-metals do not conduct electricity except graphite.

    3. Are non-metals malleable?

Answer – No, non-metals are not malleable.

      Related Topics - 

1. Activity 3.8

2. Activity 3.6

3. Solution of Chapter 3 Metals and Non-metals

4. MCQ Questions of Chapter 3

5. Extra Questions of Chapter 3

6. Solutions of Class 10 Science all chapters