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Exciting Chemical Reaction Demonstrations for Science Class

Explore fascinating chemical reactions with demo experiments like Blue Bottle, Foam Column, Burning Magnesium, Solid Reaction, Endothermic Reaction, Ethanol Flare, and Carbon Pillar. Discover the signs and principles behind each reaction.

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Exciting Chemical Reaction Demonstrations for Science Class

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  1. Signs of a Chemical Reaction Demos

  2. 1. Blue Bottle • Measure 5g Dextrose • Measure 5g NaOH pellets • Add to 250ml water • Place ¼ drop 1% methylene blue • Conical flask • Stopper • Shake the flask until NaOH is dissolved • Wait • 2.Foam Column • Potassium Permanganate (flat spoonful) • Squirt of detergent - enough to cover the KMnO4 • 30-50ml of hydrogen peroxide (slowly add) • 3.BurningMagnesium • 2cm of Mg • Hold in tongs • Ignite • Burningsteel wool • Bunsen burner mounted horizontally • Ball of wool • Then spread the wool out

  3. Solid Reaction • 1 test tube containing Potassium Iodide • 1 test tube containing Lead Nitrate • Pour the KI into a conical flask • Carefully lower the test tube of PbNO3 into the flask • Place on stopper • Place on balance and zero • Tilt flask to spill the PbNO3 • Endothermic Reaction • 10g Barium Hydroxide • 10g Ammonium Nitrate • Mix two in a 80ml beaker • Stir with glass rod - be careful of the fumes • Measure temperature • Ethanol Flare • Splash of Ethanol into the bottom of a 5 gallon water container • Swill to fill container with Ethanol vapour • Ignite at arms length • Carbon Pillar • 40ml white sugar • H2SO4 • Small beaker (80ml) • Enough of the H2SO4 to cover the sugar

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