Order early for pre-holiday delivery. Flinn will be closed December 24th, 2025,
through January 4th, 2026, reopening Monday, January 5th, 2026.
Orders received after 10:30 AM Central Time on Tuesday, December 23rd, 2025,
will ship after we return.
PC2074
Price: $5.20
Hydrogen is the most abundant element in the universe and the second most abundant in living things. Despite this, very little hydrogen is found on Earth as a gas because it is easily oxidized and combines readily with many other elements. With the Preparing and Testing Hydrogen Gas: A Microscale Approach—ChemTopic™ Lab Activity, generate hydrogen gas by reacting zinc metal with hydrochloric acid, collect it by water displacement and study its properties.