Wayne Breslyn (Dr. B.)

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Dr. B is chemist and learning scientist who enjoys creating videos to help students with chemistry and other science topics. He has taught science for over t...

Latest Videos

Decimal Coefficients When Balancing Chemical Equations

Decimal Coefficients When Balancing Chemical Equations

Wayne Breslyn (Dr. B.)

1.2K views·4 months ago

How to Draw to Structures (NEW for 2025) Dr. B's Five Step Method

How to Draw to Structures (NEW for 2025) Dr. B's Five Step Method

Wayne Breslyn (Dr. B.)

6.1K views·6 months ago

$Can we have fractional coefficients when balancing chemical equations$ 1:57

Can we have fractional coefficients when balancing chemical equations

Wayne Breslyn (Dr. B.)

1.1K views·6 months ago

How to Determine the Excess Reactant Left Over in a Limiting Reactant Problem

How to Determine the Excess Reactant Left Over in a Limiting Reactant Problem

Wayne Breslyn (Dr. B.)

1.2K views·6 months ago

How to Find the Excess Reactant (see full Playlist!)

How to Find the Excess Reactant (see full Playlist!)

Wayne Breslyn (Dr. B.)

2.3K views·7 months ago

How to Balance C2H6 + O2 → CO2 + H2O Ethane Combustion Reaction

How to Balance C2H6 + O2 → CO2 + H2O Ethane Combustion Reaction

Wayne Breslyn (Dr. B.)

5.4K views·7 months ago

✅ How to Balance Fe + O2 → Fe2O3 Iron + Oxygen Reaction

✅ How to Balance Fe + O2 → Fe2O3 Iron + Oxygen Reaction

Wayne Breslyn (Dr. B.)

5.4K views·7 months ago

Step by Step Balancing Al + O2 → Al2O3 Aluminum + Oxygen Reaction

Step by Step Balancing Al + O2 → Al2O3 Aluminum + Oxygen Reaction

Wayne Breslyn (Dr. B.)

4.7K views·8 months ago

How to Balance S + O2 → SO2 (Sulfur + Oxygen Yields Sulfur Dioxide)

How to Balance S + O2 → SO2 (Sulfur + Oxygen Yields Sulfur Dioxide)

Wayne Breslyn (Dr. B.)

1.8K views·8 months ago

New Free Chem Practice App – Test Your Knowledge!

New Free Chem Practice App – Test Your Knowledge!

Wayne Breslyn (Dr. B.)

15.3K views·8 months ago

Molecular Geometry of Ozone (O₃)

Molecular Geometry of Ozone (O₃)

Wayne Breslyn (Dr. B.)

3.0K views·9 months ago

How to Draw the Lewis Structure for Ozone (and resonance)

How to Draw the Lewis Structure for Ozone (and resonance)

Wayne Breslyn (Dr. B.)

3.0K views·10 months ago

Why is NH3 (ammonia) polar

Why is NH3 (ammonia) polar

Wayne Breslyn (Dr. B.)

2.6K views·10 months ago

Percent Yield Explained – How to Calculate Percent Yield Step by Step

Percent Yield Explained – How to Calculate Percent Yield Step by Step

Wayne Breslyn (Dr. B.)

3.3K views·10 months ago

Groups vs. Periods on the Periodic Table Easy Way to Remember

Groups vs. Periods on the Periodic Table Easy Way to Remember

Wayne Breslyn (Dr. B.)

4.6K views·11 months ago

Why Is Fluorine the Most Electronegative Element on the Periodic Table

Why Is Fluorine the Most Electronegative Element on the Periodic Table

Wayne Breslyn (Dr. B.)

4.2K views·11 months ago

NH₄⁺ Lewis Structure and Molecular Geometry (Ammonium ion)

NH₄⁺ Lewis Structure and Molecular Geometry (Ammonium ion)

Wayne Breslyn (Dr. B.)

3.2K views·1 year ago

lewis dot structure for so2 sulfur dioxide

lewis dot structure for so2 sulfur dioxide

Wayne Breslyn (Dr. B.)

29.9K views·1 year ago

Electron Affinity vs Electronegativity Key Differences Explained

Electron Affinity vs Electronegativity Key Differences Explained

Wayne Breslyn (Dr. B.)

14.0K views·1 year ago

Predicting Products of Combination Reactions Examples and Patterns

Predicting Products of Combination Reactions Examples and Patterns

Wayne Breslyn (Dr. B.)

5.8K views·1 year ago

How to Find the Oxidation Numbers for N₂O₆ (Dinitrogen Hexoxide)

How to Find the Oxidation Numbers for N₂O₆ (Dinitrogen Hexoxide)

Wayne Breslyn (Dr. B.)

1.2K views·1 year ago

Two Water Molecules Forming Hydrogen Bonds

Two Water Molecules Forming Hydrogen Bonds

Wayne Breslyn (Dr. B.)

5.2K views·1 year ago

Sizzzzzzzle! Reaction of Sodium Carbonate and Hydrochloric Acid

Sizzzzzzzle! Reaction of Sodium Carbonate and Hydrochloric Acid

Wayne Breslyn (Dr. B.)

2.1K views·1 year ago

Esters vs. Carboxylic Acids Structures, Differences, and Examples

Esters vs. Carboxylic Acids Structures, Differences, and Examples

Wayne Breslyn (Dr. B.)

3.4K views·1 year ago

How to Write the Formula for Iron (III) Sulfate – Step-by-Step Explanation

How to Write the Formula for Iron (III) Sulfate – Step-by-Step Explanation

Wayne Breslyn (Dr. B.)

1.8K views·1 year ago

How to Find Theoretical Yield – Step-by-Step Guide

How to Find Theoretical Yield – Step-by-Step Guide

Wayne Breslyn (Dr. B.)

9.6K views·1 year ago

Net Ionic Equation for HCl + NaOH (Updated for 2025!)

Net Ionic Equation for HCl + NaOH (Updated for 2025!)

Wayne Breslyn (Dr. B.)

2.6K views·1 year ago

Calculating the Amount of Product in a Limiting Reactant Problem

Calculating the Amount of Product in a Limiting Reactant Problem

Wayne Breslyn (Dr. B.)

2.6K views·1 year ago

Finding the Limiting Reactant – (New and improved!)

Finding the Limiting Reactant – (New and improved!)

Wayne Breslyn (Dr. B.)

5.8K views·1 year ago

Magnesium Metal vs Hydrochloric Acid Who wins

Magnesium Metal vs Hydrochloric Acid Who wins

Wayne Breslyn (Dr. B.)

3.6K views·1 year ago

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