1. The rate of evaporation from the surface of a liquid depends on

(a) The temperature.

(b) The volatility of the liquid.

(c) The mass density of the liquid.

(d) The air pressure above the liquid.

2. The amount of heat required to melt 1 kg of a solid is called its

(a) Heat of vaporization.

(b) Mass density.

(c) Weight density.

(d) Heat of fusion.

(e) Volume expansion.

3. The operation of a simple thermostat depends on

(a) The mechanical equivalent of heat.

(b) Specific heat.

(c) Thermal expansion.

(d) The R value.