Question

Which of these is not considered a pure substance?

A)
An atom


B)
A mixture


C)
An element


D)
A compound

Answer 1

The answer is B) A mixture.

Have a nice day! :)

Answer 2

Answer: A mixture

Step-by-step explanation:

A mixture is made up of different elements/compounds hence it is not pure

Atoms are the fundamental building blocks. A single atom is so small that it is impossible to see it. It is a pure substance since it cannot be broken down further

Elements are pure substances for example hydrogen, oxygen, sodium copper iron etc.

A compound is also a pure substance since it is made up of two or more elements