The laws of boiling are as follows:

1. Before the liquid boils, it keeps absorbing heat and the temperature rises.

2. When a liquid boils, it absorbs heat and its temperature remains constant. The temperature at which a liquid boils is called the boiling point.

Extended information

1, definition: the phenomenon of intense vaporization that occurs both inside and on the surface of a liquid.

2, the conditions of boiling: the temperature must reach the boiling point; the need to constantly absorb heat.

3, the characteristics of liquid boiling: in the process of boiling, the liquid continues to absorb heat, but the temperature remains constant. All kinds of liquids have a certain temperature when boiling, this temperature is called the boiling point, different liquids have different boiling points.

4, the relationship between air pressure and boiling point: the higher the air pressure, the higher the boiling point; the lower the air pressure, the lower the boiling point.

Boiling

Boiling is a material from the liquid state to the gas state of the phase change process, it is due to the thermal movement of the molecules inside the liquid increases, making the pressure inside the liquid increases, more than the surface of the liquid atmospheric pressure, so that the molecules inside the liquid gradually out of the liquid surface, into the gas state. The main principles of boiling are heat transfer and bubble formation.

Heat conduction is the first step in boiling, which is the process of transferring heat from a high-temperature region to a low-temperature region. When a liquid is heated, the molecules inside the liquid move faster, which causes the temperature inside the liquid to rise.

When the temperature inside the liquid rises to a certain level, the molecules on the surface of the liquid will also accelerate, which causes the temperature of the surface of the liquid to rise. When the temperature of the surface of the liquid rises, the molecules on the surface of the liquid break away from the surface of the liquid and enter the gaseous state, forming bubbles.

Bubble formation is the second step of boiling, which is the process in which the molecules on the surface of the liquid leave the surface of the liquid and enter the gaseous state. When the temperature of the surface of the liquid rises to a certain level, the molecules on the surface of the liquid break away from the surface of the liquid and enter the gaseous state, forming bubbles. As the bubbles rise in the liquid, they take away heat from the inside of the liquid, which causes the temperature inside the liquid to rise.

When the bubble reaches the surface of the liquid, the bubble will rupture, releasing gas, which makes the pressure inside the liquid lower, and the molecules inside the liquid will gradually detach from the surface of the liquid and enter the gaseous state, forming new bubbles.