Question

Liquid contract on heating.is it true or false

Answer 1

Answer:

Expansion and Contraction in Solids, Liquids and Gases Some materials expand on heating and some contract on cooling. Heating makes the particles (that form the material) expand or become loose. Cooling makes the particles (that form the material) contract or become tight.

true?

Answer 2

The statement is false. Liquid expands on heating.

Explanation:

• Kinetic theory of gases states that all molecules in a substance moves in a random manner. This motion of particles is called Brownian motion.
• Energy changes occur when there is change of state.
• When more energy is given to any matter, it expands. Molecules in matter do not expand, rather the volume that they occupy expands.
• When heat is given to any liquid, the molecules are provided more energy which enhances their speed and so kinetic energy is increased.
• This increase in kinetic energy of the molecules cause the state of matter to expand.
• This expansion on heating occurs in all states of matter be it solids, liquids or gas.
• Liquids expand more than solid because the space between molecules is more in liquid.