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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Upper Elementary Science - II
4.20 Properties of Matter

Matter can be classified as :
  • Solids
  • Liquids
  • Gases
All substances are made up of the smallest indivisible part called molecules.

Solids

  • Solids have a definite shape and volume.
  • The molecules are very closely packed.
  • They cannot be compressed.(keep the same volume)
Liquids
  • Liquids do not have a definite shape and volume.
  • They take the shape of the container they are poured into.
  • The molecules are loosely packed.
  • They cannot be compressed.
Gases
  • Gases do not have a definite shape and volume.
  • They fill shape of the container, but very difficult to catch.
  • The molecules are very very loosely packed.
  • They can be compressed.
Molecular force of attraction
The attraction between the molecules of a substance is called force of attraction. This is strongest among solids, weakest among gases and intermediary among liquids.
Q 1: The stability and structure of a substance depends upon the molecular structure that it is made up of.
false
true

Q 2: All substances irrespective of their state have force in them.
true
false

Q 3: On liquidifying a solid, we can still see it having strongest molecular force of attraction.
False
True

Q 4: Molecular force of attraction is dependent on the atmospheric temperature.
False
true

Q 5: Gas when converted to solid, will have a definite shape.
False
True

Q 6: The force of attraction among the molecules of liquids is more than gases and lesser than solids.
false
True

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Question 8: This question is available to subscribers only!


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