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Organic Chemistry


A series of free online Organic Chemistry videos presented by Khan Academy.

Related Topics:
Chemistry Lessons
High School Chemistry


Ether Naming and Introduction

Cyclic ethers and epoxide naming




Ring-opening Sn2 reaction of expoxides

Sn1 and Sn2 epoxide opening discussion



Try out our new and fun Fraction Concoction Game.

Add and subtract fractions to make exciting fraction concoctions following a recipe. There are four levels of difficulty: Easy, medium, hard and insane. Practice the basics of fraction addition and subtraction or challenge yourself with the insane level.

Fraction Concoction Game


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