Chemistry
Grade-8
Easy

Question

When you heat a sample of a solid, the particles in it becomes:

  1. Bigger
  2. Low mass
  3. faster 
  4. Slow 

hintHint:

The particles called atoms have electrons which jump to higher energy levels when they witness any external energy.

The correct answer is: faster


    • When we heat a sample of a solid, the particles in it become faster. 
    • A solid-state consists of particles called atoms in it that are present close to each other due to strong intermolecular forces of attraction. 
    • One of the properties of particles is that they get excited when they receive external energy. On heating, the heat energy is transferred to these particles. They gain energy and start vibrating and start to move faster. In doing so, they even collide with other particles and try to move away from each other. 

    When particles try to move away from each other, they result in expanding the solids.

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