Label each image as containing atoms only, molecules that are not compounds, or compounds.

Images 1 and 4: atoms

Image 2 : compounds.

Image 3 (yellow doublets): molecules that are not compounds.

Explanation:

Atoms are the smallest entity and are made of three subatomic particles: protons, electrons and neutrons.

Two or more atoms are bonded together to form a molecule. A molecule can have atoms of same or different elements.

Compounds are the molecules that have atoms of different elements only.

Image 1 and 4 represent atoms while image 2 represents compounds. Image 3 (yellow doublets) represents molecules that are not compounds.

organ system-an organ system is a group of organs that work together to perform one or more functions. each does a particular job in the body, and is made up of certain tissues.