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Grade 2 · Properties of Liquids and Solids · Liquids, Solids, and Changes

Ice, Water, and Temperature

Matter can be described by its properties. A physical change may alter its form while it remains the same kind of matter.

Visual model

See how the ideas connect

Look · connect · explain
Start at the centre. Follow each line and explain how that idea belongs to Liquids, Solids, and Changes.

For students

Notice, predict, explain

Choose one part of the model. Predict how it connects to another part, then use the lesson evidence to explain your thinking.

For teachers

Pause for science talk

Show the model before the explanation. Ask “What do you notice?” and “What might change?” Then revisit student ideas after the worked example.

The big idea

Temperature can change the state of water

Ice is solid water and keeps its own shape. Liquid water flows and takes the shape of its container. Heating and cooling can change one state into the other.

Work it through

Follow one reversible change

  1. Step 1 An ice cube is a solid with a fixed shape.
  2. Step 2 In a warmer place, it absorbs energy and melts into liquid water.
  3. Step 3 The liquid can be poured and takes the shape of a new container.
  4. Step 4 In a freezer, it loses energy and becomes solid ice again.