Brownian Motion
February 14, 2022
What is Brownian Motion? Brownian motion is the random movement of particles in a liquid or gas. This movement occurs even if no external forces
Category: General Chemistry
Clausius-Clapeyron Equation
February 1, 2022
Core Concepts: In this tutorial, you will learn what the Clausius-Clapeyron equation is and how to apply it to problems. At the end, there are
What is an Element?
January 26, 2022
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”
Gay-Lussac’s Law
January 25, 2022
What is Gay-Lussac’s Law? Gay-Lussac’s law is a gas law that states the pressure of a gas varies directly with temperature when mass and volume
Dalton’s Atomic Theory
January 18, 2022
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.
Moles and Avogadro’s Number
January 17, 2022
Core Concepts So what is a mole? In this tutorial, you will learn the definition of the mole, an important unit of measurement in chemistry.
Hund’s Rule
January 15, 2022
What is Hund’s Rule? Hund’s Rule of Maximum Multiplicity, most commonly referred to as Hund’s Rule, states that every atomic orbital within a sublevel is
Weak Acids and Weak Bases
January 11, 2022
Core Concepts In this tutorial, you will learn about weak acids and weak bases, including why they are considered weak and examples of each. We’ll
The Laws of Thermodynamics
January 3, 2022
Core Concepts There are three fundamental laws of thermodynamics, which deal with the movement and transfer of energy. Let’s learn about them in this tutorial.
What is a Polar Covalent Bond?
January 3, 2022
Core Concepts In this tutorial, we will be discussing what makes a bond polar, how a polar covalent bond is defined, examples of polar covalent
Arrhenius Equation
January 2, 2022
Core Concepts In this tutorial, you will learn what the Arrhenius equation is, how to use the equation to determine the activation energy or rate
VSEPR Theory & Chart
January 2, 2022
What is VSEPR Theory? VSEPR Theory is short for Valence Shell Electron Pair Repulsion Theory, a method of organizing molecules based on their geometric structures.
What is a Reactant?
December 20, 2021
Core Concepts In this tutorial, you will learn what a reactant is and where to find a one in a chemical equation. You will also
Pauli Exclusion Principle
December 13, 2021
Pauli Exclusion Principle Definition The Pauli Exclusion Principle states that in any atom no electron can have the same four electronic quantum numbers as another
Aufbau Principle
December 13, 2021
What is the Aufbau Principle? The Aufbau principle states that electrons will first fill the lowest energy electron shells in a neutral atom. Electrons fill
Precipitates & Precipitation Reactions in Chemistry
December 9, 2021
What is Precipitate? The definition of precipitate is a solid that precipitates (comes out of) solution. In chemistry, the solid usually forms due to a
Limiting Reactants and Limiting Reagents
December 6, 2021
Core Concepts In this tutorial, you will learn what a limiting reagent is, how to find the limiting reactant, and see some example problems. What
Density
December 3, 2021
Core Concepts In this tutorial, you will learn what density is, and how to calculate it. You will also learn the units and you will
Henderson-Hasselbalch Equation
December 2, 2021
Core Concepts In this tutorial, you will learn what the Henderson-Hasselbalch equation is, how to use the equation to determine the pH of a buffer,
Bohr Model of the Atom
December 2, 2021
Core Concepts In this tutorial, you will learn what the Bohr Model is, how it improved upon previous models of the atom, and what problems