In summer, the weather is very hot. Please think of three ways to reduce the temperature in the classroom.

Methods: Sprinkle water into the classroom;

Ventilation;

Turn on the air conditioner and electric fan.

From this experiment, you can get the following related information:

1 the heated volume of alcohol becomes larger,

Alcohol changes from liquid to gas (vaporization)

When alcohol is heated, its density becomes smaller.

When water boils, it can be found that a large amount of white gas will be released, and the changing process of this phenomenon is _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

The answer should be this, I hope you can adopt it.