MATERIAL AND PROPERTY

-Transparency of light

-insulator of heat

-conductor of heat

-conductivity of electricity

Choice of materials:

1. we choose steel because its strong
2. we choose rubber because its flexible
3. we choose wood because its stiff
4. we choose glass because it can help us see through

How to keep household items save , by putting them in the right

Here are the cautions :

Flammable

Corrosive

Poisonous

Toxic

BIOHAZARD

Explosive

Dangerous for the environment

so we must keep house hold items safely