How does heat affect matter during change of state?

1 Answer
Nov 25, 2017

Changes the state of said matter.


When particles gain energy (they gain heat), they undergo a transformation in order to accommodate this.

When a particle gains energy, it gets excited. As a result, the atomic attraction becomes weaker and they break free from each other. This leads to the matter increasing in volume: solid -> liquid -> gas.

On the other hand, when a particle loses energy (gets colder), the attraction becomes stronger and they get together. This results in matter decreasing in volume: gas -> liquid -> solid.

University of Leicester

Hope this helps :)