Chemical Reaction Equations (pg210)
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- This is a bundle of all of the resources I use to teach Unit 2: Chemistry in 8th grade. It includes worksheets, labs, PowerPoints, and even the Unit 2 Test. The pages range from 201-222 in students' binders. This means from Unit 2-Page 1, all the way to Unit 2-Page 22.Price $14.99Original Price $19.00Save $4.01
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Today I began by showing students the “Electrolysis of Water,” where electricity is used to rip water molecules apart. I showed them this experiment to illustrate how an equation can be used to describe a chemical reaction. (Click here to see the video.)
It’s almost like learning a new language, I told them. The chemical formulas in the equation tell you to draw and the coefficients tell you to draw. The reactions can be observed and explained by equations. And the equations can be translated into pictures. Believe it or not, all three of these examples (the experiment, the equation, and the picture) showed my students the same thing: when you electrocute water molecules, they divide into hydrogen gas (H2) and oxygen gas (O2). After this discussion, students practiced translating the equations into pictures using the worksheet above.