Physics
Grade-9
Easy

Question

When sufficient heat is supplied to an ice cube

  1. It changes state
  2. Its molecules get tightly packed
  3. Its molecules stop moving
  4. None of the above

hintHint:

Heat and Temperature. "Heat" is defined as the transfer of energy from the higher temperature object to the lower temperature object. "Temperature" is a measure of the average amount of kinetic energy possessed by the particles of an object.

The correct answer is: It changes state


    The answer is choice 1 which is it changes state. The solid state is converted into liquid state.

    When heat is applied to an ice molecule, the solid phase changes to the liquid phase and thus the ice is melted into water after applying heat. Heating a substance makes the molecules move faster and thus the heat energy breaks the hydrogen bonds that hold the molecules in the ice together thus resulting in melting of ice.

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