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Text card
A rock is solid. It has a fixed shape.
solid
Solids keep their shape.
Example: Rocks, books, and chairs are solids.
Grade 3
States of matter: solid, liquid, gas
Notice that things around us can be solid, liquid, or gas, and some can change from one to another.
Category: World Around Us
8 min
Confident
Ice is solid water. When it melts, it becomes liquid. When water boils, it becomes steam (gas).
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Text card
Water is liquid. It takes the shape of its container.
liquid
Pour water into different cups to see.
Example: Liquids flow and change shape.
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Text card
Air is a gas. It spreads everywhere.
gas
You cannot hold a gas in your hand.
Example: Gases spread out to fill a space.
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Text card
Ice melts into water. Water can freeze into ice.
change of state
Notice how temperature changes the state.
Example: Heating and cooling change the state of matter.
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Text card
Steam rises from boiling water. It is water as a gas.
gas example
Be careful near hot things!
Example: Boiling water turns into steam.
Try a worksheet next
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Keep going in this shelf
These suggestions stay in the same stage first, then widen slightly within the same subject shelf.
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