Question

Define and illustrate pure substance

Answer 1

WHAT IS A PURE SUBSTANCE?

• In chemistry, a pure substance is a sample of matter with both definite and constant composition and distinct chemical properties.

• To avoid confusion, a pure substance is often referred to as a "chemical substance."

EXAMPLES

• Examples of pure substances include tin, sulfur, diamond, water, pure sugar (sucrose), table salt (sodium chloride) and baking soda (sodium bicarbonate).

• All elements are pure substances.

• Sugar, salt, and baking soda are pure substances which are compounds.

Answer 2

What is a pure substance?

Pure substances are defined as substances that are made of only one type of atom or only one type of molecule (a group of atoms bonded together). 

For eg: Tin, sulfur, diamond, water, pure sugar (sucrose), table salt(sodium chloride) and baking soda(sodium bicarbonate). Crystals, in general, are pure substances.

Chemical Elements:Tin, sulfur, and diamond are examples of pure substances .

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