Everyone enjoys combining baking soda and water. Here is a lesson that challenges scholars to analyze the reaction three different ways — the real substances, the chemical equation, and the molecular models. Class members experiment to control the reaction within given parameters. 

Concepts

products, chemical reactions, reactants, conservation of mass

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Additional Tags

science

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Instructional Ideas

• After the lesson, extend it by showing a larger beaker and asking how much of each reactant should be used to make it fill to the top without overflowing. Learners should realize the amounts must stay in the same proportion

Classroom Considerations

• Ensure classroom is well ventilated
• Lesson says to project specific images on the wall, but if projection isn't available, you can print and enlarge them to show pupils
• Lesson is the second in a series of 12

Pros

• Includes discussion questions and proper answers to facilitate moving the lesson along
• Utilizes a 5E format
• Uses common materials that are inexpensive

Cons

• None

Common Core

RST.6-8.3 RST.6-8.4 RST.6-8.7 WHST.6-8.1.a WHST.6-8.1.b WHST.6-8.1.c WHST.6-8.1.d WHST.6-8.1.e