Chemistry
Grade-6
Easy

Question

When an iron rod is heated, it gets longer upon beating, this is because the particles in the iron rod:

  1. Change the shape
  2. Gets bigger
  3. Gets close together
  4. Move further apart

hintHint:

Upon heating, a solid force of attraction is weakened.

The correct answer is: Gets bigger


    • Strong forces of attraction in a solid holds its shape.
    • When a solid is heated forces of attraction become weak.
    • As forces of attraction weaken particles move away from each other.
    • As particles move away from each other, it changes their shape.
    Hence, when an iron rod is heated it gets longer as its particles move further apart.

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