Item #: AP6605
The Classifying Chemical Reactions Chemical Demonstration Kit is comprised of ten targeted demonstrations to help students become proficient in identifying the five types of chemical reactions. Students will love this spectacular kit.
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Students love spectacular chemical reactions, but do they always know what they are seeing? Use these ten targeted demonstrations to help students become proficient in identifying the five different types of chemical reactions. Single Replacement
• Stunning silver crystals completely cover the wire surface and the solution turns blue when a copper wire coil is suspended in a silver nitrate solution. • Aluminum dissolves, copper metal precipitates, and things really heat up when aluminum foil is added to copper(II) chloride. Double Replacement
• Mixing copper(II) chloride and sodium phosphate produces a beautiful turquoise precipitate.
• An “avalanche” of snow white precipitate suddenly appears when sodium chloride and silver nitrate are combined.
• Mix milk of magnesia (MOM) with universal indicator, add hydrochloric acid solution, and watch a rainbow appear and disappear as the antacid neutralizes the simulated stomach acid. Combination
• Adding water to solid calcium oxide gives calcium hydroxide, along with enough heat to fry an egg.
• Burning steel wool provides a glowing demonstration of the exothermic combination reaction of iron and oxygen. Decomposition
• Fill a Petri dish with salt and universal indicator solution, attach alligator clips and a battery, and observe a rainbow of color changes as the water molecules split apart.
• Use the “wine airlock” included with the kit to identify the gas and analyze the color changes produced when solid copper(II) carbonate is heated. Combustion
• Add a little isopropyl alcohol to a soda bottle, ignite the vapors, and “whoosh”! The combustion of isopropyl alcohol and oxygen creates a rush of gases and a spectacular blue flame. Perform all the demonstrations together as an introduction or as a review of reaction types, or space them over several days to focus on a specific type of chemical reaction. Teacher Demonstration Notes, along with a reproducible student worksheet, are included. Enough materials are provided to perform each demonstration seven times.
Concepts: Combination reaction, combustion, decomposition, electrolysis, exothermic reaction, oxidation-reduction, precipitation reaction, single and double replacement.
Time Required: One full class period
Materials Provided: Aluminum foil, calcium oxide, copper(II) chloride solution, isopropyl alcohol, sodium chloride/universal indicator solution, sodium phosphate solution, hydrochloric acid solution, bromthymol blue indicator solution, copper(II) carbonate, copper wire, acetone, milk of magnesia, silver nitrate solution, sodium chloride solution, universal indicator solution, steel wool, wine airlock, 9-V battery, battery leads with alligator clips, fifteen disposable pipets and seven disposable Petri dishes.
Note: Some common laboratory equipment is required, but not provided.