Also, what happens when a liquid turns into a gas?
When you heat something up, it makes the molecules move faster. When this happens, all of the molecules go flying apart and become a gas (like when you boil water to make steam). The process of gas molecules leaving the liquid to go into the gas is called "evaporation." The opposite process is called "condensation."
Similarly, what is it called when matter changes state? From Wikipedia, the free encyclopedia. A phase change is a change in the states of matter. For example, a solid may become a liquid. This phase change is called melting. When a solid changes into a gas, it is called sublimation.
Similarly one may ask, why must energy be absorbed to change a liquid to a gas?
The liquid experiences an exposure to heat, which turns the liquid into a gas. For example, water exposed to heat becomes steam. Energy is what gives off heat. So in order to have heat, you need to emit a lot of energy.
What happens when substances change state?
The closeness, arrangement and motion of the particles in a substance change when it changes state. When a substance is heated, its internal energy increases: the movement of its particles increases. bonds between particles break when a substance melts or evaporates, or sublimes to form a gas from a solid.
