Chemistry · Matter in Our Surroundings

Which of the following best defines a pure substance in chemistry?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1A mixture that has the same composition throughout
2A single form of matter that cannot be separated into other kinds of matter by any physical process✓
3A substance that contains only one type of compound and can be broken down physically
4Any naturally occurring material that is free from external pollution

Correct answer

A single form of matter that cannot be separated into other kinds of matter by any physical process

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