Write down the basic properties of the substance in solid, liquid and gaseous states.

Solid – retains its shape and volume.
Liquid – retains volume, but takes the form of a vessel. Gaseous – does not retain either volume or shape.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.