What you’ll need: Steps: The Science: The yeast contains an enzyme called catalase, which breaks down the hydrogen peroxide into water and oxygen gas. The oxygen bubbles get trapped in the soap ...

The elephant's toothpaste experiment shows how a catalyst can speed up the rate of a reaction. Hydrogen peroxide breaks down slowly into water and oxygen. Adding a catalyst such as sodium iodide ...

There’s typically a higher percentage of hydrogen peroxide in a whitening gel or strip than there will be in toothpaste, but the best option for you will be something that fits with your lifestyle.

The recently concluded WOW Festival was a vibrant celebration of women’s achievements, resilience and creativity ...