Watch a simple but fascinating chemistry experiment using phenolphthalein and dry ice to demonstrate pH changes in real time.

Hyaluronic acid is prominent in ophthalmic, medical, pharmacological, and cosmetic applications. Previous hyaluronic acid experiments have involved several size-exclusion chromatography (SEC) studies.

Introduction You might have done experiments with well-labeled acids and bases in school, but have you ever wondered whether a certain food or chemical around the house is an acid or a base? You can ...