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Grade 2 · Science · Unit 3 of 8

Changing Materials

Cut, bend, mix, cook and burn

What your child practises

Ways to change materials: cutting, bending, mixing, warming and cooling keep the same material, while cooking, burning and rusting make something new.

Nunavut Curriculum approved guide: Nunavut Science K–6 (2025), 2.MW.1.4; 2.MW.1.5 · physical and chemical changes, and their signs

Sample questions

A taste of this unit. In the app, questions change every time and get easier or harder to match your child.

  1. Question 1

    What happens to sugar when you stir it into warm water?

    🥄
    • it seems to disappear into the water
    • it floats like a boat
    • it turns into a rock

  2. Question 2

    Which is a chemical change?

    • 🕯️a candle wick burning
    • 🧊ice melting
    • 📄paper being torn

  3. Question 3

    Which change makes something brand-new that you can't change back?

    • 🥤bending a straw
    • ✂️cutting paper
    • 🍪baking cookie dough into cookies

  4. Question 4

    Same material or a new one? Tap an item, then tap its basket.

    Sort into: ✂️ same material · 🔥 new material made

    • 🎂bake a cake
    • ✈️fold a paper plane
    • ✂️cut paper
    • 🔥burn wood in a campfire
    • 🧊melt an ice cube
    • 🍞toast bread

  5. Question 5

    Which tool would you use to change the shape of paper?

    • 🌡️a thermometer
    • 🧲a magnet
    • ✂️scissors

  6. Question 6

    A change in shape, size or state, like cutting or melting, is called a…

    ✂️
    • chemical change
    • physical change
    • life cycle

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