Category: Atoms and Molecules

Core Concepts In this article you will learn about the different things that contribute to atomic mass. What makes up an atom, and how to

Core Concepts In this article, you will learn about atomic number, its definition, its usefulness in categorizing elements, and its history as a theory in

Learn about the Rutherford atomic model, the gold foil (scattering) experiment, and the limitations of Rutherford’s model!

Core Concepts In this tutorial, you will be introduced to the different types of chemistry prefixes. You will also learn the basics of these chemistry

Chemical elements. Atomic elements. Simple substances. Elements of the periodic table. These are all different terms for the same concept. A long time ago, “elements”

Introduction to the Dalton Atomic Model Dalton’s atomic theory was proposed in 1804 and was the first attempt to describe matter in terms of atoms.

Core Concepts In this tutorial, you will be introduced to a calculation called percent by weight. In order to fully understand, you will also walk

Core Concepts Learning the common polyatomic ions is a rite of passage for all chemistry students. The good news is that many of these ions

Core Concepts – Ions, Cations & Anions What are ions? In this tutorial, you will learn about the properties, differences, and examples of ions, cations

Core Concepts Naming covalent compounds and molecular compounds can be fun! In this tutorial, you will learn how to derive the name of covalent compounds,

Core Concepts In this tutorial, you will learn what an empirical formula and molecular formula are, and the differences of molecular formula vs empirical formula.

Core Concepts In this tutorial, you will learn about nomenclature and naming ionic compounds. We will derive names from the chemical formulas of binary and

So what is a molecule? In this chemistry tutorial, you will learn the difference between a molecule vs compound. They are very similar, but there