Question

Which of the following is a pure substance made up of one type of atoms?

A compound
An element
A mixture

Answer 1

Hey there!

Answer - An Element
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An element is a pure substance made up of one kind of atom.

And atom is smallest particle of an element.

There are 118 elements.

And atoms combine each other to form a molecule.

Hope it helps you!

Answer 2

Pure elements are Substances which are made up of only one kind of atom. Air is a mixture of element and compound whereas alcohol in water is a mixture of compounds. CO2 is a pure compound and not an element.