General Chemistry

(Last Updated 08/26/2026 15:30 MST)

SI (Metric) System

SI System Base Units

SI System Prefixes

SI System Practice

Significant Figures

Add and Subtract Significant Figures

Significant Figures Practice

Density, Volume, and Conversion Factors

Density of Common Substances

Density, Volume, and Conversion Factors Practice

Atomic Theory and Chemical Formulas

Contributors to Atomic Theory

Dalton's Atoms

Periodic Table

Chemical Formulas of Common Compounds Practice

Mole Concept

Mole Relationship: Atomic vs. Human Scale

Mole Relationships Picture

Mole Relationships Calculations

Mole Relationships Table

Mole Concept Practice

More Mole Practice and Calculating Empirical Formulas

Ions

What are Ions?

Ions on a Periodic Table

Ions Sorted by Charge

Ions Sorted by Chemical Name

Ions Sorted by Chemical Formula

Oxidation Numbers and Ions (no transition metals)

Oxidation Numbers and Ions (d block metals)

Molecular Structure

VSEPR Summary (2 per page)

VSEPR Theory (2 pages!)

Molecular Structure Worksheet (ions only)

Molecular Structure Worksheet (molecules only)

Intermolecular Forces

Dispersion as Percent of IMF Energy

IMF and Bond Energies

Concentration Conversions

Concentration Conversions

Acid-Base

Acids and Conjugates

Dissociation Constants for Acids and Bases

Types of pH Calculations

Raise pH of Weak Acid by Dilution

Kinetics

Rate Equation Summary

OpenStax Initial Rate Questions

OpenStax Integrated Rate Questions

OpenStax Activation Energy Questions

Ksp Solubility Calculations

Types of Solubility Calculations