In this video Paul Andersen explains how electrochemical reactions can separate the reduction and oxidation portions of a redox reactions to generate (or consume) electricity. The half reactions can be analyzed to determine the...

Paul Andersen explains how enzymes are used to break down substrates. The correct shape of the active site allows a key/lock fit between the enzyme and the substrate. The enzyme catalase is used to break down hydrogen peroxide. The...

Mr. Andersen explains the concept of a limiting reactant (or a limiting reagent) in a chemical reaction. He also shows you how to calculate the limiting reactant and the percent yield in a chemical reaction.

In this video Paul Andersen explains the importance of oxygen in accepting electrons. He begins with a brief description of combustion. He then explains the role of oxygen in aerobic cellular respiration.

Today's episode dives into the HOW of enthalpy. How we calculate it, and how we determine it experimentally...even if our determinations here at Crash Course Chemistry are somewhat shoddy.

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In this video Paul Andersen explains how chemical reactions progress as bonds are broken and reformed reformed. He explains the difference between changes in state and changes in molecules. He discussed collision theory and explains...

Mr. Andersen explains the difference between physical and chemical changes. A brief discussion of chemical reactions and equations is also included.

In this video Paul Andersen defines and explains the importance of the mole. The mole is simply a number (like a dozen) used to express the massive number of atoms in matter. It serves as a bridge between the mass of a compound and the...

Can you believe that you can blow up a balloon without actually blowing your own air into it!? Follow along with this super neat experiment and find out how!

Paul Andersen explains the process of photosynthesis by which plants and algae can convert carbon dioxide into useable sugar. He begins with a brief description of the chloroplast. He describes the major pigments in a plant (like...

In this video Paul Andersen explains why the slowest elementary step in a chemical reaction is the rate-limiting step. This step can be used to determine the overall rate law of the chemical reaction.

This engaging program explains how chemical reactions can be described and written. Special emphasis is focused on how chemical reactions involve the rearrangement of atoms, but not the overall change in mass (Law of the Conservation of...

The fascinating nature of chemical reactions are explored in this program. By highlighting common indicators students will learn how to identify the presence of chemical reactions. This video correlates to the Next Generation Science...

This video describes the role that energy plays in chemical reactions. In this program easy-to-understand examples compare endothermic and exothermic reactions. This video correlates to the Next Generation Science Standard for Middle...

What causes the rate of reaction.

SUMMARY

In this video, I show Why Some Reactions EXPLODE and Others COOL: Root Cause of Chemical EnergyI I show how the chemistry behind endothermic and exothermic reactions can be traced to the underlying quantum...

Howcast - Learn the history of red velvet cake from professional cake decorator Amanda Oakleaf in this Howcast video.

Howcast - Learn how to fill a balloon with gas using baking soda and vinegar with the instructions in this Howcast science project video.

Howcast - Learn how to explode a plastic bag using baking soda and vinegar with the instructions in this Howcast science project video.

“Producing Heat” explains the ways heat is produced.

Pupil outcome: I can draw particles diagrams of reactants and products to show how they are rearranged by a chemical reaction. Key learning points: - Reactants are the chemicals that react in a chemical reaction. - Products are the...

Pupil outcome: I can write the introduction of a non-chronological report about anglerfish. Key learning points: - An introduction's purpose is to give general facts to the reader and to encourage them to read on. - The introduction...

“Interconnected Ecosystems” explores interdependent relationships between living things in various biomes.

Explores the relationship between equilibrium and thermodynamic concepts like Gibbs free energy