CBSE 8 Science - Metals and Non-metals - Revision Assignment

NCERT | CBSE | Grade 8 | Science | Chemistry | Metals and Non-metals | Revision Assignment | Chapter Level

1. Differentiate between metals and non-metals based on the following physical properties.

a) Malleability

b) Ductility

c) Sonority

d) Electrical conductivity

e) Lustre

2. What is displacement reaction? Explain with an example.

3. Give reasons for the following:

a) Gold and silver suitable for making jewellery.

b) Sodium reacts with cold water, whereas iron does not.

c) Copper cannot replace iron from its salt solution.

d) Copper is used for making electrical wires while Silver is not.

e) Cooking utensils are made of metals whereas there handles are wooden

f) Sodium is stored in kerosene while phosphorus is stored under water.