Question

What is an element?

A.

a material that is shiny and usually hard and strong

B.

a substance made of just one kind of atom that cannot be broken down into something simpler

C.

a substance made up of hydrogen and one other kind of atom

D.

a substance made of just one kind of molecule that cannot be broken down into something simpler

Answer 1

B) a substance made of just one kind of atom that cannot be broken down into something simpler

Step-by-step explanation:

Elements are what you find on the periodic table of elements.

Take oxygen, for example. You can have one or multiple atoms, but if they are all oxygen atoms it's an element.