Question

a substance whose volume is reduced when heated to 4 degree celsius is​

Answer 1

Answer:

Interestingly, the coefficient of thermal expansion of water is not constant over the temperature range 0°C to 100°C at one atmosphere of pressure. In fact, the coefficient changes sign from negative to positive at just below 4°C (so the maximum density of water occurs at this temperature). As water is heated from 1°C to 4°C, since the coefficient is negative, the volume will decrease. As the water is heated above 4°C, the coefficient is positive, and the volume will increase.