Project 9 out of 20

Blow a candle out with a bang using oxyhydrogen

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Use the same kind of chemical reactions that power rocket engines in this experiment! You’ll be using oxyhydrogen to extinguish a flame with a loud pop. When water is electrolyzed, it decomposes into two gases: oxygen and hydrogen. The end result of the electrolysis is the formation of twice as much hydrogen as oxygen and is what is frequently used in blow torches and welding materials. Follow the step-by-step instructions as this experiment walks you through the electrolysis portion of the experiment, in which you’ll use electricity to ‘disassemble’ the water molecules. Then, you’ll set up an apparatus for you to expose your newly formed Oxyhydrogen to the open flame in a safe way. Watch and hear what happens when you put the gas near your candle.

Milestones Unlocked

Understanding Chemical Formulas

Identifying Exothermic vs. Endothermic Reactions in Experiments

The Limestone Cycle

Course Progression

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Lesson Preview

Get ready to conduct two experiments that show you all the cools things you can do with chemical reactions. You’ll break super stable bonds with lots of energy, observe the power of thermodynamics, and even crush a plastic bottle without touching it. Lesson 9 takes you deeper into the laws of thermodynamics, building on the previous lessons where you learned about exothermic and endothermic reactions. You’ll continue practicing balancing chemical equations, and learn about the limestone cycle and how it can be a part of a violent chemical reaction with just the addition of water. Unlock more key chemistry concepts as you move through this lesson. Let’s get started!

    Chemistry Course


    20 Experiments


    Ages 10+


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