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Safely observe the explosive nature of hydrogen gas! Generate microscale amounts (50–60 mL) of hydrogen gas in syringes. Perform the classic candle test for the detection of H2, ignite bubbles filled with pure hydrogen and compare them to bubbles filled with mixtures of hydrogen and air, and determine whether H2 burns in the absence of air. Includes Teacher Notes, reproducible student handouts and all necessary chemicals and specialized materials.
Complete for 30 students working in pairs.
The Chemistry of Gases Classroom Equipment Kit (AP5951) is needed to perform this lab and is available separately.
Materials Included in Kit:
Bubble solution, 200 mL
Hydrochloric acid solution, 1 M, 500 mL
Magnesium powder, 8 g
Silicone grease packet
Candles, birthday type, pkg/24, 2
Dishes, weighing, 0.5 g, 1⅝" x 1⅝" x 5/16", 15
Stoppers, rubber, black, 1-hole, size #1, 15
Tubes, culture, disposable, 16 x 125 mm, 15
Wood splints, 30
MS-PS1-2: Analyze and interpret data on the properties of substances before and after the substances interact to determine if a chemical reaction has occurred.
HS-PS1-2: Construct and revise an explanation for the outcome of a simple chemical reaction based on the outermost electron states of atoms, trends in the periodic table, and knowledge of the patterns of chemical properties.
HS-PS1-7: Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction.
HS-PS1-6: Refine the design of a chemical system by specifying a change in conditions that would produce increased amounts of products at equilibrium.