When liquid is heated and turns into a gas called water vapor, this process is called?

When liquid is heated and turns into a gas called water vapor, this process is called?

• A. Evaporation
• B. Freezing
• C. Melting
• D. Energy

Answer: (A)

Vaporization is the change from a liquid to a gas. When you heat water, its molecules move faster, and some at the surface gain enough energy to break free into the air as water vapor. This surface process is called evaporation, a type of vaporization that can occur below the liquid’s boiling point. The other terms describe different transitions: freezing is liquid to solid, melting is solid to liquid, and energy is not a change of state. (If heating continues to the boiling point, bubbling through the liquid occurs, which is called boiling, another form of vaporization.)

Vaporization is the change from a liquid to a gas. When you heat water, its molecules move faster, and some at the surface gain enough energy to break free into the air as water vapor. This surface process is called evaporation, a type of vaporization that can occur below the liquid’s boiling point. The other terms describe different transitions: freezing is liquid to solid, melting is solid to liquid, and energy is not a change of state. (If heating continues to the boiling point, bubbling through the liquid occurs, which is called boiling, another form of vaporization.)