Description
Colour Changing Bubble Bath – red to blue
Crazy Foam’s colour changing bubble bath: Kids go crazy for magically changing bubble bath. Pour, mix and watch the ‘magical’ colour changes from: red to green then blue!
Contents:
Teaching notes for colour changing bubble bath
- 200 ml Colour changing bubble bath
- Teaching notes
- 30 ml Measuring cup
- 3 ml Pipette.
Buying for a special occasion? Then we recommend our safety glasses and Primary Science Kit as additional purchases to make this an amazing science gift!
Make your bath-time magical with our colour changing bubble bath. Watch the mild & gentle bubble bath change from orange to blue in front of your very eyes!
How the bubble bath works
Colour changing bubble bath that can change from orange to green pH balanced formula to gently cleanse and moisturise delicate skin SLES and Paraben free. Fabulous fruity scent in Red to Blue bubble bath.
Teaching notes for colour changing bubble bath
This product is:
- Mild & Gentle
- Hypo-Allergenic
- Dermatologically Tested
- Paraben Free
Check out Science2Life’s teaching notes to find out how to make a bubble solution that bounces and a colour changing bath bomb!
A snippet from our teaching notes
Bromocresol green is a dye used as a pH indicator for many biological experiments.
Bromocresol green colour chart
A pH indicator is a chemical compound added in small amounts to a solution so that the pH (acidity or alkalinity) of the solution can be seen. The pH indicator is a chemical detector for hydronium ions (H3O+) or hydrogen ions (H+). The indicators change the colour of the solution depending on the pH. Some indicators only have 2 colour changes; Litmus (a solution of different dyes made from lichen) is red in acid or blue in alkaline solutions.
Typical indicators are phenolphthalein, methyl orange, methyl red, bromothymol blue, and thymol blue. They each change colour at different points on the pH scale, and can be used together as a universal indicator.
Bromocresol green is yellow in solutions with pH values less than 3.8; green for pH values between 3.8 and 5.4 and blue for solutions with a pH value above 5.4.
Why does the bath water always turn the bubble bath blue?
The pH of pure water is 7, any solution with a pH less than 7 is considered to be acidic, and with a pH above 7 considered alkaline. However, tap water can have a pH value between 6.5 and 8.5. For all liquids which have a pH value greater that 5.4 the bromocresol green indicator in the soap will always turn a blue colour.
