Concept explainers
(a)
Interpretation:
Whether the conversion of gas into liquid requires heating or cooling is to be stated.
Concept introduction:
Any substance in the universe which occupies volume and possesses mass is known as matter. It can be classified physically as well as chemically.
The physical classification of the matter is as follows:
• Solids
• Liquids
• Gases
The solid
(b)
Interpretation:
Whether the conversion of liquid to solid requires heating or cooling is to be stated.
Concept introduction:
Any substance in the universe which occupies volume and possesses mass is known as matter. It can be classified physically as well as chemically.
The physical classification of the matter is as follows:
• Solids
• Liquids
• Gases
The solid state of matter consists of a fixed shape and fixed volume. The liquid state of matter consists of a fixed volume but does not possess a fixed shape. This state of matter takes the shape of the vessel in which it is stored. The gaseous state of matter possesses neither a fixed volume nor a fixed shape.
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