How Does Phase Changes | Chemistry | The Good and the Beautiful Work?

Phase changes are when matter goes from one form to another, like ice turning into water or steam turning back into water.

Think of solid, liquid, and gas as different kinds of playdates.

• A solid is like a group of kids sitting quietly in a circle, holding hands, they’re all close together and don’t move much. Ice is like that.
• A liquid is like the same group of kids, but now they're moving around a bit more, some are dancing, others just walking, they’re still together, but not as tight. Water is like that.
• A gas is like the kids all running off in different directions, spread out across the room, they’re free and far apart. Steam or air is like that.

When you add heat, it’s like giving them more energy to play:

• Ice (solid) gets warmer and turns into water (liquid). That's melting.
• Water gets even warmer and becomes steam (gas). That's boiling.

When you take away heat, the kids slow down:

• Steam cools and becomes water, that’s condensation.
• Water cools and becomes ice, that’s freezing.

It’s like a game of tag, when they're running, it's hot; when they stop, it's cold! Phase changes are when matter goes from one form to another, like ice turning into water or steam turning back into water.

Think of solid, liquid, and gas as different kinds of playdates.

• A solid is like a group of kids sitting quietly in a circle, holding hands, they’re all close together and don’t move much. Ice is like that.
• A liquid is like the same group of kids, but now they're moving around a bit more, some are dancing, others just walking, they’re still together, but not as tight. Water is like that.
• A gas is like the kids all running off in different directions, spread out across the room, they’re free and far apart. Steam or air is like that.