Page 101 - SCERT Kerala State Syllabus 8th Standard Basic Science Textbooks English Medium Part 1_Neat

Let us assess

1. Some metals are listed below. Complete the table by
identifying the different uses and the properties which are
responsible for the same.
Metal Use Property

Gold •
•

Copper •

•
Aluminium •

•

Zinc •
•

Iron •

•
2. Iron is a metal which corrodes fast.
• What are the factors that favour the corrosion of iron?

• In coastal regions, copper nails are preferred to iron nails.
What could be the reason?
• Can you suggest some measures to prevent the corrosion
of iron?

3. Based on the physical properties of metals, indicate whether
the following statements are true or false

1 Aluminium is a conductor of electricity

2 The metal cesium melts at high temperatures
3 Platinum is a metal with poor malleability
4 Potassium is a hard metal

5 Copper metal is sonorous
6 The density of gold is very low

7 Copper is a good conductor of heat
8 Sodium is a hard metal

100 Basic Science VIII