CHEM 112 Final: Chemistry 112 Fall

• School: Queen's University
• Department: Chemistry
• Course: CHEM 112
• Professor: John Carran

Document Summary

Atoms is the first unit covered in our theme of structure and bonding" and is also the first unit of the course that contains testable material. A discussion of atoms is a natural starting point for a chemistry course. Molecules are composed of atoms connected in different ways via bonds, chemical reactions occur when bonds between atoms change and many chemical phenomena can be understood in terms of atomic properties. This unit assumes you are familiar with the basic composition of an atom. Specifically, it is assumed that you know: atoms are composed of protons, electrons, and neutrons, protons carry a positive charge, electrons carry a negative charge, and neutrons are neutral. Protons and electrons have charges of equal magnitude: protons and neutrons reside in the nucleus and electrons move around the nucleus, protons and neutrons are nearly equal in mass, and are much heavier than electrons.