Evidence of a Chemical Change Activity: 8 Mini Labs

Choose from 8 different reactions – or use them all as a stations activity – to let students witness different types of EVIDENCE of a chemical change firsthand!  These labs use easy supplies but produce reliable results!

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The types of evidence of a chemical reaction that students will experience are:

• Formation of a precipitate (2 reactions to choose from)
• Temperature increase (3 exothermic reactions to choose from)
• Temperature decrease (2 endothermic reactions to choose from)
• Gas production (4 reactions to choose from)
• Color change (1 reaction)

Each of the 8 Reactions Comes With:

1. A station card that gives background information about the reactants, the chemical equation, a materials list, and simple instructions for students to follow to complete the reaction. (These station cards are reusable and are not written on.)
2. A student worksheet that includes analysis questions about observations, a CER, identifying the reactants and products, and more.

This Download Includes:

• 8 Stations Cards, one for each reaction
• 8 Students Analysis Worksheets, one for each reaction
• Detailed teacher notes and tips
• Supplies checklist
• Answer keys

Easy Supplies: (Remember, you don’t have to do them all!)

• hydrogen peroxide, balloons, yeast, lemon juice, baking soda, Epsom salt, sodium carbonate (AKA washing soda in laundry section of supermarket), stirrers, vinegar, bleach, steel wool, plastic baggies, driveway ice melt
• One of the labs uses pH paper but still provides evidence of a chemical change without it.

Teacher Notes:

• Please note that this resource is not editable.
• Related standard: NGSS MS-PS1-2 and MS-PS1-5
• Related standard: NGSS Science & Engineering Practices: Planning and carrying out investigations; Analyzing and interpreting data; Engaging in argument from evidence
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Related Standards:

• NGSS MS-PS1-2: Analyze and interpret data on the properties of substances before and after interaction to determine if a chemical reaction occurred.
• NGSS MS-PS1-5: Develop and use a model to describe how the total number of atoms does not change in a chemical reaction and thus mass is conserved.