PSI Barbering Practice Exam

An example of an elemental molecule is:

1. Atoms

2. Molecules

3. Compounds

4. Mixtures

The correct answer is: Atoms

An elemental molecule is defined as a molecule that consists entirely of one type of atom. In the context of this question, atoms are the simplest units of matter and can exist independently or combined with other atoms of the same or different elements to form molecules. When considering elemental molecules, such as O2 (oxygen), which consists of two oxygen atoms bonded together, the reference is to substances that contain just one element. This differentiation is crucial as it distinguishes them from compounds, which are made of different elements combined, and mixtures, which involve two or more substances that are physically combined but not chemically bonded. In summary, choosing atoms as the correct answer to identify an elemental molecule aligns with the fundamental definition of what constitutes an elemental structure in chemistry.