Question

How can you tell that catalase has been added to hydrogen peroxide?

Answer 1

It will bubble!

Explanation:

The catalase enzyme causes the hydrogen peroxide to break down. This reaction forms water and oxygen. The bubbles are oxygen gas.

`2H_2O_2(l) -> 2H_2O(l) + O_2(g)`

Check out video of this reaction below. The liver in the test tube is a source of catalase enzyme

The wooden splint starts burning again because the the bubbles are filled with oxygen gas.

Hope this helps!