Aim: To make red cabbage pH indicator for use on different household chemicals
What makes something acid ?
Properties of acid
What is an acid? a substances with particular chemical .
What are 3 examples of acids? sulfuric acid , carbonic acid , hydrochloric acid
What is the most famous indicator? Moving averages
What does pH stand for? power of hydrogen
How many numbers are there on the pH scale? 1-14
Red Cabbage Indicator experiment
Materials
Red Cabbage
Beaker
Bunsen Burner
Pipette
Sodium Hydroxide
Hydrochloric acid
Test Tubes
Paper towel
Test tube rack
Water
Vinegar
Floor cleaner
Dishwashing liquid
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.
Findings:
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