Have you ever wondered why coloured clothes fade when they are bleached? What is the effect of dry bleach on colour?
Things Required:
Small baby food jar
Red food colouring
Powdered bleach
Teaspoon
Directions:
Fill the jar with water. Add one drop of food colouring; stir. Add and stir in one teaspoonful of powdered bleach. Wait for 15 minutes.
This Is What Happens:
The red colour starts to fade and finally disappears. The water becomes clear except for any undissolved bleach.
Science Behind It:
When added to water, the powdered bleach slowly gives off oxygen. The combination of this oxygen with the red dye causes the colour to fade until it becomes colourless.
