Chemical Change Investigations | Inquiry in Action

In this series of 10 investigations, students gain experience with the evidence of chemical change - production of a gas, change in temperature, color change, and formation of a precipitate. Students begin by observing that similar-looking powders can be differentiated by the way they react chemically with certain test liquids. Students then use their chemical tests and observations to identify an unknown powder and, in a follow-up activity, to identify the active ingredients in baking powder. Students continue to explore chemical change by using a thermometer to observe that temperature either increases or decreases during chemical reactions. Then they control these reactions by adjusting the amount of reactants. In another set of activities, students use the color changes of red cabbage indicator to classify substances as acids or bases, neutralize solutions, and compare the relative acidity of two different solutions. Students conclude the investigation by comparing a precipitate to one of the reactants that formed it. Students see that a new substance was created during the chemical reaction. Information and questions about photosynthesis and cellular respiration are included as examples of chemical changes on pages 316-318 of this resource.
Resource ID#: 12700 Type: Unit/Lesson Sequence
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Direct Link: https://www.cpalms.org/uploads/resources/acs/Inv5.pdf

General Information

Subject(s): Science
Grade Level(s): 4, 8
Intended Audience: Educators educators
Suggested Technology: Adobe Acrobat Reader
Instructional Time: 11 Hour(s)
Resource supports reading in content area:Yes
Freely Available: Yes
Keywords: inquiry, american chemical society, elementary school science, chemical change, indicator, acid, base, temperature, chemistry, neutralize, solution, photosynthesis, cellular respiration
Instructional Component Type(s): Unit/Lesson Sequence,  Lesson Plan,  Worksheet,  Assessment,  Formative Assessment
Instructional Design Framework(s): Confirmation Inquiry (Level 1), Structured Inquiry (Level 2), Guided Inquiry (Level 3)
Resource Collection: iCPALMS

Aligned Standards

This vetted resource aligns to concepts or skills in these benchmarks.

Aligned Access Points

This vetted resource aligns to concepts or skills in these access points.

SC.4.N.1.In.1
Ask a question about the natural world and use selected reference material to find information, observe, explore, and identify findings.

SC.4.N.1.In.3
Relate findings to predefined science questions.

SC.4.N.1.In.5
Recognize that scientists perform experiments, make observations, and gather evidence.

SC.4.P.9.In.1
Observe and describe properties of materials that have been changed into other materials, such as decayed leaves of a plant.

SC.4.P.9.Su.1
Indicate differences in materials that have been changed into other materials, such as rust on a can.

SC.4.P.9.Pa.1
Recognize changes in observable properties of materials.

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