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General Chemistry – Molecular Structure & Bonding – Molecular Geometry

In this video we’re gonna look at molecular geometry. We’re gonna use VSEPR model to predict molecular geometry. VSEPR model is valence shell electric pair repulsion model. VSEPR is based on the premise that the regions of negative charge around an electron adopt positions that minimize the repulsion between them. It’s important to realize that […]

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Atomic Hook-Ups – Types of Chemical Bonds: Crash Course Chemistry #22

Humans, like chemicals, are really all about bonds. Think about all the relationships in your life. You’re a casual acquaintance to some people, a colleague or friend to others, and maybe more to that someone special. Maybe you’re dating someone casually, or you’re in a committed relationship, or you’re married. There are all kinds of […]

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From Lifesaver Sparks to Life-saving Tech: The Science of Triboluminescence

In 1620, Francis Bacon wrote a book arguing that scientists should trust experiments instead of old philosophers. And in that book he somehow found the time to mention that sugar emits light when you crush it. This non-sequitur is the first documentation of a phenomenon we now call triboluminescence. Today, we know that his sugar […]

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