Thursday, April 5, 2012

4/5/12 - Mysterious Powder Notes - Open note test Friday

What is it

PT

PR

Iodine

Vinegar

Look

Red

Baking Soda (sodium bicarbonate)

pink purple

dark pink

fizzes

extremely small grains

Yellow

Salt

reddish pink

grainy

cubic

Green

Cornstarch

yellow

turns black

fluffy

Blue

Citric Acid

orange

grainy

large

Orange

Calcium Carbonate

bubble gum pink

fizzes

fluffy

Purple

Sugar

dark orange

grainy

same size as yellow

irregular

PT (phenolphthalein) - indicator of bases (higher levels of OH)

PR (phenol red) - indicator of acids (higher levels of H)

Iodine - indicator of starch

Vinegar - indicator of carbonate (esp. baking soda)


Charts to blogger does not work out so well. Need to figure it out!

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