During science lab, some students added small pieces of magnesium ribbon to 10 mL of hydrochloric acid. They noticed that bubble
s formed, the test tube got hot, and the magnesium disappeared. Which is a sign that a chemical reaction has taken place in this experiment?
A) change in odor
B) change in color
C) release of heat energy
D) disappearance of magnesium
Leavening may be achieved by the process of fermentation, which releases carbon dioxide gas. Bakers' yeast, composed of living cells of the yeast strain Saccharomyces cerevisiae, is available as a pressed cake and in a powdered form.