Table C: Known Specific Heat Values for Common Materials

Material Specific Heat (J/g*C)

Water 4.18

Concrete 0.88

Wood 1.80

Aluminum 0.90

Glass 0.84

Sand 0.83

Steel 0.49

Iron 0.44

Copper 0.38

Lead 0.16

Gold 0.13

What is the best insulator? and why

Water is the best insulator.

Explanation:

Specific Heat Capacity is the amount of heat required to raise the temperature of 1 kg of a substance by 1 K.

A good insulator has a high specific heat capacity.

This means that it absorbs more heat for raising its temperature by 1 K.

This is a property of a good insulator.

Among the given materials, water has the highest specific heat capacity.

Hence, water is the best insulator.