Heating Matter. What changes in state occur when matter is heated? Here I've got some ice that I just pulled out of the freezer. Notice that as the ice moves from one beaker to another, its shape stays the same.
It's an example of matter in a solid state. All matter is made up on tiny particles and in solid matter these particles are tightly packed together. They are not free to move about or slide past each other.
What do you think will happen when the ice is heated? Let's find out. Check it out, the ice is changing into water.
It's melting. Compared to a solid, the particles that make up a liquid are less tightly packed together. They are free to slide past each other. This property allows liquids to flow and change shape.
A liquid will spread out to take the shape of the container it is in. When we pour water from container to another, the shape of the water changes, but the volume, the amount of space it takes up, stays the same. What do you think will happen when the water is heated? Cool, the water is changing to a gas. It's evaporating into a gas called water vapour.
The particles that make up a gas are able to move about freely. This property allows gases to change in both shape and volume. As the water vapour leaves the beaker, it will spread out to fill the room.
We've seen what happens when matter is heated. What do you think will happen when matter is cooled? Check out our related videos to find out.
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