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What are the odds the coffee you are drinking has the same water molecules as Abraham Lincoln's?

browse videos in chemistry

MythBusters: Blowing Bulbs (1:00)

Does spraying drain cleaner onto a light bulb really cause it to explode? Adam tests this technique from a classic MacGyver episode.

Investigating Chemical Properties: Science Analysis (10:06)

This video explains the process and method behind scientific investigations.

Investigating Chemical Properties: Scientific Sizes (9:45)

Learn more about scientific measurements in this video.

Investigating Chemical Properties: Scientific Method (12:07)

Learn more about the scientific method in this video.

Investigating Chemical Properties: Desalination (7:47)

See how seawater is desalinated in this video.

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Simply Science: Energy and Reacting Molecules (5:37)

Reacting molecules must possess enough energy for a chemical reaction to occur. The amount of energy absorbed or released determines whether a reaction is endothermic or exothermic.

Simply Science: The Human Engine (3:01)

Food provides energy for the human body. This clip discusses the energy efficiency of the human body.

Simply Science: Determining Walnut Energy (6:36)

A bomb calorimeter and a homemade calorimeter are used to determine the amount of energy in a walnut in this video from HowStuffWorks.

Simply Science: Energy Efficiency (2:48)

This clip reviews calculations used to determine the amount of input energy that is converted to useful energy.

Simply Science: Useful and Wasted Energy (4:58)

Both useful energy and waste energy are produced during the transfer of energy.

Simply Science: Equilibrium in the Biosphere (2:58)

Learn more about the biosphere's equilibrium in this video from HowStuffWorks.

Simply Science: Metabolism and Homeostasis (5:02)

Cells continuously convert matter to energy that our bodies can use. Metabolism refers to the conversion of matter to energy.

Simply Science: Dynamic Equilibrium (6:07)

Dynamic equilibrium represents the constant change of a system to maintain equilibrium as materials flow into and out of the system. Diffusion and osmosis across a cell's semipermeable membrane helps to maintain equilibrium.

Simply Science: Tonicity (3:24)

Tonicity refers to the concentrations inside and outside the cell. Isotonic means these concentrations are the same. Hypertonic means that there is a higher concentration, and hypotonic means that there is a lower concentration.

Simply Science: Maintaining Equilibrium (5:56)

Equilibrium is a balance between opposing processes that results in a stable condition. Diffusion within cells keeps our bodies in equilibrium. All chemical systems will naturally move toward equilibrium.