Question

sublimation is when a solid gains energy and becomes a gas, skipping the change to liquid. sublimation occurs when heat increases. it causes the particles to move so fast that they separate and become a gas. examples of sublimation include dry ice, freeze - drying, and mothballs. dry ice is solid carbon dioxide (co2) that does not melt into a liquid at room temperature. it sublimates into a gas. foods that are freeze - dried remove water from frozen foods without the water ever becoming liquid, going straight to water vapor. mothballs used to be made of a chemical called naphthalene, which sublimated at room temperature. this caused mothballs to decrease in size over time. when changing from solid to gas during sublimation, do the particles involved gain or lose energy? they keep the same energy. they lose energy. they gain energy.

Explanation:

Sublimation occurs when heat is added to a solid, causing particles to move faster and become a gas. Heat is a form of energy, so particles gain energy in the process.

Answer:

They gain energy.