What changes occurs when a liquid boil?

Boiling is the process by which a liquid turns into a vapor when it is heated to its boiling point

Hello there :)

It’s actually quite interesting. If a liquid is heated the particles are given more energy and move faster and faster expanding the liquid. At normal atmosphere pressure, all materials have a specific temperature at which boiling occurs. This is called the boiling points or boiling temperature.

Hope this helps!

Yes it would be a physical change.

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .