Backwards Planning Lessons

1752 WordsApr 1, 20148 Pages
Carol-Ann Dennis – Backward Planning Lessons 1-4 – Week 3 Title of Lesson 1: What is a chemical reaction? Grade Levels: 7th grade Standard: 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. (examples = burning sugar or steel wool, fat reacting with sodium hydroxide, and mixing zinc with hydrogen chloride). Objectives: Students will be introduced to chemical reactions, reactants, and products and will build upon their knowledge of chemical versus physical changes. Essential Questions: How is a chemical change related to a chemical reaction? Estimated Time: 50 minutes Materials: Steel wool, lighter,…show more content…
(examples = burning sugar or steel wool, fat reacting with sodium hydroxide, and mixing zinc with hydrogen chloride). Objectives: Students will learn that some chemical reactions form precipitates. Essential Questions: What is a precipitate and why do some chemical reactions produce precipitates? How do the ions of molecules in two solutions react to form a solid? Estimated Time: 50 minutes Materials: Sodium carbonate, Epsom salt (magnesium sulfate), 2 clear plastic cups, test tube, water, Copper II sulfate, household ammonia, hydrogen peroxide (3%), graduated cylinder, 2 droppers, baking soda, calcium chloride, water, graduated cylinder, ½ teaspoon measuring spoon, masking tape, pens, Science Interactive Journal. 6E Learning Cycle Stages Engage: The teacher will prepare beforehand the two plastic cup solutions. The teacher will pour 100mL of water in one clear plastic cup and add 10g of magnesium sulfate. Stir until the solution is clear. The teacher will pour 50 mL of water in another clear plastic sup and add 5 g of sodium carbonate. Stir until the solution is clear. The teacher will hold up the two clear colorless solutions and slowly pour the smaller amount into the larger. Students will record their observations and questions they have about the reaction in their Science Interactive Journals. Explore Through E-search: Students will find videos and articles about
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