Aim: To make red cabbage pH indicator for use on different household chemicals.
Red Cabbage
Beaker
Bunsen Burner
Pipette
Sodium Hydroxide
Hydrochloric acid
Test Tubes
Paper towel
Test tube rack
Water
Steps:
Chop up the red cabbage into small pieces. Place in a beaker and cover with a small amount of water.
Bring the solution to the boil using a bunsen burner and then turn off the heat. Let it sit to cool down.
Pour the cabbage water through a paper towel into a beaker. The dark purple liquid in the jar is the pH indicator liquid.
Suck up the indicator into a pipette.
Use the cabbage indicator to test the acidity of the different household liquids by slowly putting a drop at a time into the test tube.
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