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What is soap scum, and why does it form? Explore hard versus soft water with a video from JFR Science. The narrator explains why someone might have hard water, the factors that affect ion solubility, and how a water softener addresses dissolved calcium and magnesium ions.
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CCSS:
Adaptable
Concepts
Additional Tags
Instructional Ideas
- Use the resource to kick off an interesting problem-based activity
- Demonstrate the precipitation reaction the narrator describes between calcium and sodium carbonate
Classroom Considerations
- Pupils should be comfortable with writing and balancing chemical equations before beginning net ionic equations
- This video is hosted on YouTube
Pros
- Gives clear explanations of softening hard water, as well as writing net ionic equations
- The resource serves as an excellent example of chemistry solving a real-world problem in a simple manner
Cons
- None