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Science Experiments with Mrs. White 

Last week, the 8th grade science class did two experiments. The first was “Lights Out”. For this one, students made Carbon Dioxide (CO2) and used it to extinguish a candle. They combined 1.5 grams of baking soda and 25 ml of vinegar. This made CO2. As CO2 does not allow flame, pouring the heavier-than-air mixture on to the flame put out the candle. 

The second experiment was ‘Colour Switch’. First, students put 2 sliced red cabbage leaves and 236 ml of water into a quart-size bag. Then they kneaded the mixture for about 10 minutes and let is sit for 24 hours. The next day, there was a dark purple liquid. Next, students evenly poured the mixture into 3 cups. .6 grams of Cream of Tartar was added to the first cup. When mixed, it turned a light pink. .6 grams of powdered laundry detergent was added to the second cup. When mixed, it turned a dark green. Nothing was added to the third cup, as it was a control. Each of the colour switches the students had is a chemical reaction.

By Matthew Fiedler






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