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2nd grade states of matter

2nd grade (Year 3 in England) · 16 questions · Common Core: NGSS.2-PS1-1, NGSS.2-PS1-4, NGSS.5-PS1-1, NGSS.K-PS3-1 · England: KS2 Y4 States of matter, KS1 Y2 Uses of everyday materials, KS2 Y5 Properties and changes of materials

Name

Date

Score/ 16

1
Question 1
A clay model is soft. How can you make it hard and strong for good?
- A. Put it in the fridge.
- B. Squash it.
- C. Leave it in water.
- D. Bake (fire) it in a kiln.
2
Question 2
Glaciers around the world are melting faster than they did 50 years ago. What does the ice race help explain?
- A. Glaciers are made of wax.
- B. Warmer surroundings make ice melt faster.
- C. Ice melts only at night.
- D. Ice melts faster in the cold.
3
Question 3
Four ice cubes of the same size were put in different places. The chart shows how many minutes each took to melt. Where did the ice last LONGEST?
- A. sunny windowsill
- B. classroom table
- C. shady porch
- D. fridge
4
Question 4
True or false? Melted chocolate sets hard again when it cools.
- A. True
- B. False
5
Question 5
Can this change be undone: baking a cake?
- A. can change back
- B. cannot change back
6
Question 6
True or false? A solid keeps its shape when you move it to a new container.
- A. True
- B. False
7
Question 7
What happens when this cools down: hot candle wax left to cool?
- A. freezes into ice
- B. becomes an ice lolly (popsicle)
- C. sets into a wobbly solid
- D. turns back into solid wax
8
Question 8
Is a pencil a solid, a liquid or a gas?
- A. solid
- B. liquid
- C. gas
9
Question 9
You pour juice from a jug into a glass. What happens to its shape and volume?
- A. The volume changes but the shape stays the same
- B. The shape changes but the volume stays the same
- C. Neither changes
- D. Both change
10
Question 10
What is the name for a change from gas to liquid?
- A. evaporating (or boiling)
- B. melting
- C. condensing
- D. freezing
11
Question 11
Which state of matter does this particle picture show?
- A. solid
- B. liquid
- C. gas
12
Question 12
Why does a bathroom mirror steam up after a hot shower?
- A. Soap sticks to the mirror.
- B. Light turns into water.
- C. The mirror is melting.
- D. Warm, damp air cools on the mirror and forms tiny water drops.
13
Question 13
Changes of state: which statement is true?
- A. The water on the outside of a cold can leaks through the metal.
- B. Water only evaporates when it boils.
- C. Steam (water vapour) is invisible; the white cloud above a kettle is tiny water droplets.
- D. Melting makes a substance lose mass.
14
Question 14
Is this a solid or a liquid: cooking oil?
- A. solid
- B. liquid
15
Question 15
Ice cream is left in the sun and melts. Then it is put back in the freezer. Is it the same as before?
- A. It freezes solid again, though it may be icier and harder than before.
- B. It stays a liquid in the freezer.
- C. It turns into milk powder.
- D. It burns.
16
Question 16
What happens when you heat this: a raw egg in a pan?
- A. boils and turns to steam
- B. turns brown and crunchy
- C. melts into a liquid
- D. turns white and firm

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Answer key: 2nd grade states of matter

1. D. Bake (fire) it in a kiln.
2. B. Warmer surroundings make ice melt faster.
3. D. fridge
4. A. True
5. B. cannot change back
6. A. True
7. D. turns back into solid wax
8. A. solid
9. B. The shape changes but the volume stays the same
10. C. condensing
11. C. gas
12. D. Warm, damp air cools on the mirror and forms tiny water drops.
13. C. Steam (water vapour) is invisible; the white cloud above a kettle is tiny water droplets.
14. B. liquid
15. A. It freezes solid again, though it may be icier and harder than before.
16. D. turns white and firm