Question

Mario claims that a chemical reaction occurs when the yeast, water, and hydrogen peroxide are combined. Which observation BEST supports his claim?

Answer 1

The observation that BEST supports Mario's claim of a chemical reaction occurring when yeast, water, and hydrogen peroxide are combined is the production of bubbles or foam. This bubbling is typically due to the release of oxygen gas, which is a result of the enzyme catalase in the yeast breaking down hydrogen peroxide into water and oxygen. The presence of gas bubbles is a strong indicator of a chemical reaction taking place.