Question

If you add energy to a solid, what change of state might occur?

a
It changes from a liquid to a solid
b
It changes from a solid to a liquid
c
It changes from a solid to a gas
d
It changes from a liquid to a gas

Answer 1

Answer: b It changes from a solid to a liquid

Step-by-step explanation:

Solid state : In this state, the molecules are arranged in regular and repeating pattern. The molecules are closely packed that means they are fixed and vibrate in place but they can not move from one place to another.

Liquid state : In this state, the molecules are present in random and irregular pattern. The molecules are closely packed but they can move from one place to another.

Gaseous state : In this state, the molecules are present in irregular pattern. The molecules are not closely packed and they can move freely from one place to another and spread out.

In solid the particles are closely packed as the inter molecular forces of attraction are strongest. As energy is added to solids, the kinetic energy of the molecules increases and thus the molecules start moving farther and convert to liquid state. The process is called melting.