Question

I notice that bubbles form in boiling water. According to the scientific method, which of the following could be hypotheses?

A) Bubbles form in boiling water due to the presence of invisible gremlins.
B) Bubbles form in boiling water because of the heat energy causing water molecules to vaporize.
C) Bubbles form in boiling water because of the phase transition from liquid to gas.
D) Bubbles form in boiling water because of the shape of the container.

Answer 1

Bubbles form in boiling water because of the phase transition from liquid to gas, known as vaporization or boiling. The temperature at which this occurs is called the boiling point.

Step-by-step explanation:

Bubbles form in boiling water because of the phase transition from liquid to gas. When water is heated, the water molecules gain enough energy to overcome the attractive forces between them, allowing them to move apart and escape from the liquid as a gas. This process is known as vaporization or boiling. The temperature at which this phase transition occurs is called the boiling point. As the water boils, bubbles of water vapor form and rise to the surface.