Question

What is a pure substance ? Give its one characteristic.
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Answer 1

Answer:

chemical substance having same chemicals composition is known as pure substance.

characterstic: it is made up of only one type of atom....

Answer 2

Answer:

pure substance is made up of same material which is combined in a fixed ratio

example air is not a pure substance because it is made up of different gases

character it is made up of same atom

mark it as branliest answer