Question

Write any two properties of a pure substance.

Answer 1

• Pure substance- If all the constituent particles of a substance are the same in their chemical nature, it is called a pure substance.
• The matter is composed of either a pure substance or a combination of two or more pure substances.
• In an example of pure water, all the molecules are H₂O, independent of the origin of that water.

Two properties of a pure substance-

• A pure substance has a fixed chemical composition throughout.
• It also has well-defined physical properties, such as colour, taste, smell, melting point, boiling point, etc.