During which phase change is heat energy absorbed by a substance?

evaporation

Explanation:

The process of converting a liquid to a gas is called evaporation. 600 cal is needed to convert 1g of water to water vapor at 0 °C or 540 cal at 100 °C.

The thermal energy absorbed by the molecules of a liquid during evaporation is used only to give them the movement needed to escape from the liquid's surface and become a gas. This energy, which is later released as heat when the vapor is liquid again, is called latent heat of vaporization.

frogs. the lower the ph the higher the acid content. frogs have the highest tolerance in this scenario.

the correct answer is 2 and 4