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Grade 7 Science lesson plan: Chemical reactions

Topic: Chemical reactions: comparing properties before and after (MS-PS1-2). Adjust the settings, then copy the prompt.

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Planning notes for this lesson

Prerequisite skills to check: properties of materials such as color, hardness and solubility (5-PS1-3); mixing two or more substances can make a new substance (5-PS1-4); measuring mass and volume; reading a data table.

Key vocabulary: substance, property, chemical reaction, reactant, product, density, solubility, flammability.

Warm-up idea: Show a slice of bread next to a piece of dark toast (or a photo of burnt sugar). Ask: is the toast still bread? What evidence would prove that a new substance formed?

Exit ticket idea: Students read a data table of density, melting point, solubility and odor for substances before and after they interact, decide whether a chemical reaction happened, and support the claim with at least two properties that changed.

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