CHE 111/133

Significant Figures

Rules for Addition and Subtraction

Rules for Determining Significant Zeros

Rules for Multiplication and Division

Scientific Notation Explained

Unit conversions

Unit Conversions

Understanding Unit Conversions

Multistep conversion

Converting Cubic Units

Mole Conversions

Converting Moles to Grams

Converting Grams to Moles

Converting Moles to Molecules

Grams to Moles to Atoms and vice versa

Metric Conversion Acronym


Introduction to Nomenclature-1

Introduction to Nomenclature-2

Naming Ionic Compounds

Writing Ionic Formulas

Writing Formulas with Polyatomic Ions

Basics of an Atom

Basic Atomic Structure: A Look Inside the Atom

Atomic Number, Mass Number, and Net Charge



What is an Ion?

Scientific Notation and Significant Figures

Atomic Mass and Mass Number

Atomic Mass: How to Calculate Isotope Abundance

Empirical and Molecular Formula

Introduction to Empirical and Molecular Formulas

Calculating Empirical and Molecular Formulas

Balancing equations

Balancing Chemical Equations-1

Balancing Chemical Equations-2

Balancing Chemical Equations-3

Percent Composition by Mass

Percent Composition by Mass


Mole Ratio Practice Problems

Limiting Reagent and Percent yield

Limiting Reagent Practice Problems


Molarity Practice Problems-1

Molarity Practice Problems-2

Thermodynamics: Exothermic/Endothermic; Work and Energy

Thermodynamics, Energy, Enthalpy, and Entropy

Drawing Lewis Dot Structures

Valence Electrons and the Periodic Table

Drawing Lewis Dot Diagrams

VSEPR Dot Structure Geometry

Lewis Diagrams and VSEPR Models

VSEPR Theory: Introduction

Different Chemical Equations

Molecular, Ionic, and Net Ionic Equations

Net Ionic Equations

Gas Laws

Ideal Gas Law Introduction

Do not Memorize the Gas Laws!

Which Gas Equation Do I Use?

Combined Gas Law

Rearranging the Combined Gas Equation

CHE 134

Equilibrium Constant

Equilibrium Reactions

Solving Equilibrium Equation

Gibbs Free Energy


La Chatelier’s Principle

Acid-Base Equilibrium



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