B. Fill in the blanks.
1. The amount of matter in a substance is known as its…………………..
2. The state of matter that has a fixed shape and volume is ………………….
3. ………………..are good conductors of heat and electricity.
4. A hard brittle material that allows fight to pass through it is…………………………..
5. Plastics are used to make electric switches as they are……………….. good/poor conductors of electricity.
6. Tiles are normally made from……………..
7. usually…………… is used as fishing line.
8. How readily a substance conducts electricity is measured by its…………………. conductivity.
9. The handles of cooking utensils are made of the substance which is a thermal………………………….
10. If substance changes from solid to liquid state at temperature T1 c,and from liquid to gas at temper ………………………………..point is T2 c.