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Combinations of Matter

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Combinations of Matter. Signs of a Chemical Reaction Demos. 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

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Presentation Transcript
slide1

Combinations of Matter

Signs of a Chemical Reaction Demos

slide2

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
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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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