← Back to chapter
Vidaara.orgClass 4 · Mathematics
CodeVID-M4-WS
Matter & Its Changes — Practice Worksheet
Chapter: Matter & Its Changes
Topic: Matter & Its Changes
Maximum Marks: 25
Time: 30 minutes
Name: ____________________ Roll No.: __________ Date: ____________

General Instructions

  • All questions are compulsory.
  • Choose the correct option (A, B, C or D) for each question.
  • The answer key is at the end — try the paper first!
Section A — Multiple Choice (1 mark each) 15 × 1 = 15 marks
1.
A gas spreads out to fill…
  • A.Nothing
  • B.A fixed shape
  • C.Only a cup
  • D.All the space it can
2.
When a liquid turns into a gas (vapour), it is called…
  • A.Evaporation
  • B.Freezing
  • C.Melting
  • D.Mixing
3.
A liquid takes the shape of its…
  • A.Box only
  • B.Own
  • C.Container
  • D.Hand
4.
Wet clothes dry because the water in them…
  • A.Melts
  • B.Freezes
  • C.Evaporates
  • D.Mixes
5.
A change that can be undone to get back the first thing is…
  • A.Permanent
  • B.Irreversible
  • C.Reversible
  • D.Burning
6.
Sugar dissolves faster in water that is…
  • A.Oily
  • B.Icy cold and still
  • C.Frozen
  • D.Warm and stirred
7.
Which dissolves in water?
  • A.Sand
  • B.Salt
  • C.Oil
  • D.A coin
8.
When a solid is heated and turns into a liquid, it is called…
  • A.Freezing
  • B.Melting
  • C.Boiling
  • D.Mixing
9.
Water drops on a cold glass of juice form by…
  • A.Condensation
  • B.Evaporation
  • C.Freezing
  • D.Burning
10.
Cooking an egg is ___ because you cannot get the raw egg back.
  • A.Melting
  • B.Reversible
  • C.Irreversible
  • D.Mixing only
11.
Tiny particles are packed most tightly in a…
  • A.Solid
  • B.Liquid
  • C.Gas
  • D.Flame
12.
Butter left in a hot pan turns runny. This change is…
  • A.Mixing
  • B.Freezing
  • C.Melting
  • D.Burning
13.
A substance that dissolves in water is said to be…
  • A.Soluble
  • B.Insoluble
  • C.Frozen
  • D.Solid only
14.
Melting ice and freezing it again is a ___ change.
  • A.Reversible
  • B.Irreversible
  • C.Burning
  • D.Cooking only
15.
Ice melting into water is caused by…
  • A.Quiet
  • B.Cold
  • C.Darkness
  • D.Heat
Section B — Challenge / Olympiad (2 marks each) 5 × 2 = 10 marks
16.
Melting and freezing can be reversed. Frozen water can melt and then be frozen again, so they are ___ changes.
  • A.Burning
  • B.Irreversible
  • C.Permanent
  • D.Reversible
17.
Iron slowly turning into reddish rust in damp air is an example of a change that is…
  • A.Irreversible
  • B.Reversible
  • C.Melting
  • D.Freezing
18.
We can get the salt back from salty water by letting the water…
  • A.Freeze the salt away
  • B.Evaporate, leaving the salt
  • C.Burn
  • D.Dissolve more
19.
Evaporation and condensation together keep happening in nature as part of the…
  • A.Light cycle
  • B.Food chain
  • C.Water cycle
  • D.Day cycle
20.
A balloon can be squeezed smaller because the gas inside has particles that are…
  • A.Solid
  • B.Tightly packed
  • C.Frozen
  • D.Far apart and can be pushed closer

Answer Key

Section A — Multiple Choice (1 mark each)
  1. (D) All the space it can
  2. (A) Evaporation
  3. (C) Container
  4. (C) Evaporates
  5. (C) Reversible
  6. (D) Warm and stirred
  7. (B) Salt
  8. (B) Melting
  9. (A) Condensation
  10. (C) Irreversible
  11. (A) Solid
  12. (C) Melting
  13. (A) Soluble
  14. (A) Reversible
  15. (D) Heat
Section B — Challenge / Olympiad (2 marks each)
  1. (D) Reversible
  2. (A) Irreversible
  3. (B) Evaporate, leaving the salt
  4. (C) Water cycle
  5. (D) Far apart and can be pushed closer
Generated by Vidaara.org · Assignment VID-M4-WS · vidaara.org