The rainbows that we see in the sky are caused by a reflection of the sun’s rays in drops of rain. There are also other ways to view a rainbow with the help of water and a few other supplies. You can even make a type of rainbow in the comfort of your own home.
An indicator is a substance that can be used to determine pH of a substance. Make your own indicator using red cabbage leaves and test household items.
Chalk is used in many applications and industries... more familiarly in the classroom. Make your own chalk and learn the science behind this incredible product.