It's getting cold. How to express a chemical sentence?

There are many ways to express cold weather by chemical methods, such as:

1, temperature drop: cold weather means that the temperature will drop, specifically, the temperature will drop from the original high temperature to low temperature, which is the process of temperature drop, that is, the temperature will weaken.

2, chemical reaction: cold weather will also lead to changes in the composition of gases in the air, especially water vapor, which will affect the humidity of the air, thus causing chemical reactions, such as the condensation of water vapor in the air into liquid water, which is the chemical reaction formed by water droplets.

3. Heat loss: When the air temperature weakens, the heat is lost, and it flows from the higher temperature area to the lower temperature area, so that the temperature in the air gradually decreases and the weather becomes cold.

4. Other factors: In addition to the above-mentioned physical and chemical changes, cold weather may be accompanied by some other factors, such as changes in air pressure, smog, etc. These factors will also affect the temperature of the air and make the weather cold.

In short, the chemical manifestations of cold weather refer to the drop of temperature, the change of gas composition in the air, the loss of heat and other possible accompanying factors.