Question

How does heat affect change of state?

Answer 1

Hint: Heat can be explained under the thermodynamics branch of science which deals with the heat, work and temperature. Heat can be defined as the energy which transfers to or from a thermodynamic system by transfer of matter.

Complete answer:
Matter is any substance which has mass and takes some space. Matter has three states known by the name solid, liquid and gas. These can be distinguished on the basis of intermolecular forces. Solid substances are those in which molecules are attached very tightly with each other i.e. the intermolecular forces between them is very strong due to which they have fixed shape. In case of liquids the intermolecular forces between them is lesser as compared to solid but stronger as compared to gaseous particles and in case of liquids they have tendency to flow. In gaseous particles the forces are very less so that they have a great tendency to flow.
With the increase in temperature intermolecular forces between the particles goes on increasing which basically changes the state of matter. This can be explained on the basis of an example like ice which is in solid state when we increase the temperature ice melts and changes into water i.e. liquid state or if we increase the temperature more, water starts converting into vapors.
Hence we can say that heat changes the state of matter.

Note:
Solid state has definite shape, liquid state takes the shape of the container in which it is kept and gaseous state has no shape as it has a great tendency to flow. Intermolecular forces are those forces which binds the molecules of matter together.