Science 2 · Unit 3: Getting materials right · Cambridge Primary Science Stage 2

Questions

1. 1. What happens to solid chocolate when it gets hot?

   • It turns into egg.
   • It turns into ice.
   • It gets harder.
   • It melts into a liquid.
   Check

2. 2. How can liquid chocolate be made solid again?

   • make it hotter
   • shake it
   • make it cold
   • add water
   Check

3. 3. What happens to liquid egg when it is heated?

   • It changes into a new solid material.
   • It turns into chocolate.
   • It melts.
   • It stays a liquid.
   Check

4. 4. Can cooked egg be changed back into liquid egg?

   • Yes
   • No
   Check

5. 5. Is an egg from its shell a solid or a liquid?

   • solid
   • liquid
   Check

6. 6. Is flour a solid or a liquid?

   • solid
   • liquid
   Check

7. 7. What happens when you mix sugar, butter and eggs?

   • Nothing happens.
   • You make a rock.
   • You make a mixture.
   • You make glass.
   Check

8. 8. What happens to bread when it is toasted?

   • It becomes a liquid.
   • It gets softer and white.
   • It becomes harder, browner and more rigid.
   • It turns into flour.
   Check

9. 9. Which change makes a new material?

   • melting chocolate
   • burning wood
   • melting ice
   • cooling chocolate
   Check

10. 10. What happens to ice when we heat it?

    • It turns into egg.
    • It turns into toast.
    • It melts into water.
    • It gets harder.
    Check

11. 11. Why does a peeled apple go brown?

    • Someone paints it.
    • It is getting younger.
    • It gets cold.
    • Air changes it into a new material.
    Check

12. 12. A diagram of bread shows crumbs, crust and small holes, but not the knife. Why?

    • Knives are too hard to draw.
    • Diagrams never have labels.
    • The knife was not there.
    • A diagram only shows the important information.
    Check

13. 13. Why must you not touch a toaster?

    • It is very cold.
    • It is sticky.
    • It is soft.
    • It gets very hot.
    Check

14. 14. Why should we use recycled paper?

    • It is always prettier.
    • It uses more oil.
    • It makes more litter.
    • It saves trees.
    Check

15. 15. Why is plastic in rivers and the sea a problem?

    • It makes the sea warmer.
    • It feeds the fish.
    • It cleans the water.
    • It is pollution that harms living things.
    Check