Question

What is meant by a pure substance? Explain with examples.​

Answer 1

Answer:

In chemistry, a substance is pure if it has a homogeneous chemical composition. At the nanoscale, this only applies to a substance made up of one type of atom, molecule, or compound. ... Examples of pure substances include iron, steel, and water. Air is a homogeneous mixture that is often considered to be a pure substance.

Answer 2

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• In chemistry, a substance is pure if it has a homogeneous chemical composition.

• At the nanoscale, this only applies to a substance made up of one type of atom, molecule, or compound.

•  Examples of pure substances include iron, steel, and water.

• Air is a homogeneous mixture that is often considered to be a pure substance