Things are getting a little slippery in an inquiry-based lesson studying precipitates. Learners use soap and Alka-Seltzer tablets to create different mixtures with water. They then study the properties of the mixtures including their ability to produce suds. 

Concepts

substances, mixtures, chemical reactions, liquids, precipitates

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Instructional Ideas

• Bring a sample of hard and soft water to compare with mixtures in the experiment

Classroom Considerations

• Review safety precautions for handling chemicals prior to the activity
• Fits as the 12th lesson in the consecutive 16-part Inquiry in Action series 

Pros

• Emphasizes scientific vocabulary throughout
• Includes a detailed teaching guide to help plan for instruction

Cons

• None