Would you classify the atoms in the table as pure substances?

Yes

Explanation:

Atoms are generally classified as pure substances. A pure substance has the following properties:

All parts are the same throughout i.e. homogeneousThey have definite compositionThe cannot easily be broken down into simpler substances by physical means. Separation by physical methods is not easy. They have unique sets of physical properties.

Elements and compounds are generally classified as pure substances. Since atoms are the building blocks of pure substances, they can be classified as one.

It’s b. mass i searched it up

Carbon based or cells?