Watch a simple but fascinating chemistry experiment using phenolphthalein and dry ice to demonstrate pH changes in real time. See how carbon dioxide forms acid in water and causes a dramatic color ...

Note: This video is designed to help the teacher better understand the lesson and is NOT intended to be shown to students. It includes observations and conclusions that students are meant to make on ...

A well-established technique, acid-base titration is an analytical method used to determine the concentration of an unknown acid or base. In practice, it involves adding a solution of known strength ...