Question

the colored spheres shown below are models. some of the models represent a single atom. other models represent molecules. complete the chart below by placing each model under the correct heading.

Explanation:

To determine if a model is an atom or a molecule, we use the definitions: an atom is a single particle (represented by one sphere), and a molecule is a group of two or more atoms bonded together (represented by multiple spheres).

• Atom: The first (orange single sphere), the fourth (red single sphere) are single spheres, so they are atoms.
• Molecule: The second (three spheres: two red, one blue), the third (three spheres: one red, two blue), the fifth (two orange spheres) are groups of multiple spheres, so they are molecules.

Answer:

atom	molecule