Dacy Buerkle waving the match over Copper Carbonate.

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The junior class started their discussion of the different types of Chemical Equations. They did a variety of experiments to explain the four main types: Synthesis, Decomposition, Single Replacement, and Double Replacement. By using Hydrogen and Oxygen as reactants, they combined the two elements to create water causing a Synthesis Reaction. Decomposition was discovered by lighting a match and heating Copper Carbonate. When the match is waved over the Copper Carbonate, the light will extinguish. The next reaction they learned about was Single Replacement. To demonstrate, the class placed zinc metal in the bottom of a test tube and filled the tube with a Copper Sulfate solution. After waiting several minutes, the Copper and Zinc switched places forming Copper and a Zinc Sulfate solution. To finish the day, students mixed Lead (II) Nitrate and Potassium Iodine. The Lead and Potassium switch places, creating a bright yellow reaction. Overall, the students had an engaging day of learning about the types of reactions.

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