There are three types of GPA that medical schools calculate, and you need to know about each: 1  Overall GPA â The raw GPA calculation of all of your undergraduate coursework combined. 2  BCPM â âScience GPA.â Your GPA for all of your science coursework. This is the big one. 3  AO GPA â âAll Otherâ GPA.
Best Answer: A molecule is formed when two or more atoms join together chemically. A compound is a molecule that contains at least two different elements. All compounds are molecules but not all molecules are compounds. Source(s):
Atoms have the  same number of protons and electrons, â¦ because otherwise, you would  have an ion.   A molecule consists of two or more atoms bonded together.    Atoms are single units of elements.   Molecules are agglomerations of two or more atoms  (of the same or different elements). A molecule is the smallest  particle of a chemical compound. Molecules are formed by atoms in a  multitude of different arrangements.   - Most atmospheric oxygen forms diatomic molecules (O2),  but also ozone (O3)   - One molecule of water has one atom of hydrogen and two atoms of  oxygen. So-called heavy water contains deuterium, which is hydrogen  that has neutrons.