Acid

 Aim: To make red cabbage pH indicator for use on different household materials.

Red Cabbage Indicator Experiment:

Materials:

1. Red Cabbage

2. Beaker

3. Bunsen Burner

4. Pipette

1. Sodium Hydroxide

2. Hydrochloric acid

3. Test Tubes

4. Paper towel

5. Test tube rack

6. Water

Steps

1. Chop up the red cabbage into small pieces. Place in a beaker and cover with a small amount of water.

2. Bring the solution to the boil using a bunsen burner and then turn off the heat. Let it sit to cool down.

3. Pour the cabbage water through a paper towel into a beaker. The dark purple liquid in the jar is the pH indicator liquid.

4. Suck up the indicator into a pipette.

5. 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.

Hydrochloric acid = Red

Dishwasher powder = green

sodium hydrogen = light green