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The Identifying Chemical Reactions Chemical Demonstration Kit provides a review of combination reactions, decomposition reactions, single and double replacement reactions and combustion reactions. Students also review chemical equations.

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Recognizing chemical reactions and “translating” them into chemical equations are essential skills students need in order to be successful in chemistry. Review the different types of chemical reactions and help your students succeed using this colorful collection of five demonstrations.
• Combination Reaction—Adding water to calcium oxide produces calcium hydroxide, along with enough heat to fry an egg!
• Decomposition Reaction—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.
• Single Replacement Reaction—Aluminum dissolves and copper metal precipitates when aluminum foil is placed in a solution of copper(II) chloride.
• Double Replacement Reaction—Mixing copper(II) chloride and sodium phosphate produces a beautiful green precipitate.
• Combustion Reaction—Add a little isopropyl alcohol to a 2-L soda bottle, ignite the vapors, and “whoosh”! The combustion of isopropyl alcohol and oxygen produces a rush of gases and a spectacular blue flame.

Use the demonstrations singly as a way to introduce each new topic, or perform all the demonstrations together as a review of reaction types.

Concepts: Combination reaction, combustion, decomposition, electrolysis, exothermic reaction, oxidation–reduction, precipitation reaction, single and double replacement.
Time Required: One full class period
Note: Some common laboratory equipment is required, but not provided.

Correlation to Next Generation Science Standards (NGSS)

Science & Engineering Practices

Analyzing and interpreting data
Constructing explanations and designing solutions

Disciplinary Core Ideas

MS-PS1.B: Chemical Reactions
HS-PS1.B: Chemical Reactions

Crosscutting Concepts

Energy and matter
Stability and change

Performance Expectations

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-PS1-4: Develop a model to illustrate that the release or absorption of energy from a chemical reaction system depends upon the changes in total bond energy.
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.
MS-PS1-6: Undertake a design project to construct, test, and modify a device that either releases or absorbs thermal energy by chemical processes.