Phase Changes

When ice melts to form water vapor

When water vapor cools down to form liquid water

When a solid turns directly to a gas without turning into liquid

Solid, Liquid and Gas

Solid Gas and Plasma

Plasma, Maryland and Virginia

When something that is a solid becomes a liquid by adding cold

When something that is solid becomes a liquid by adding heat

When something that is liquid becomes a gas by adding heat

When the solid form of matter is cooled enough and changes to a gas

When the liquid form of matter is cooled enough and changes to a solid

When the soild form of matter changes directly to a gas

When solid rock melts to form lava

When water vapor cools down to form liquid water

The transition of a substance from a solid directly to a gas

A thought

The letter O

The letter M

Cold because it lacks thermal energy

Cold because of the theory of Newton's Laws of Motion

Hot because you can always easily catch a cold