14.How do you classify elements from compounds?
A. Elements are single atom substances.
B. Compounds are composed of one molecule.
C. Compounds are composed of two or more molecules.
D. Compounds are composed of two or more compounds.
15.Why is it important to be familiar with elements and compounds?
A. To classify them accordingly.
B. To tell others you know them.
C. To enumerate elements and compounds. D. To be praised by others of knowing them. ​