Aligned to the next generation science standards.
- Disciplinary Core Ideas: PS1.A; PS1.B
- Performance Expectations: MS-PS1-2; HS-PS1-2
- Cross Cutting Concepts: Patterns
Engineering practices: Analyzing and interpreting data; scientific knowledge is based on empirical evidence; constructing explanations and designing solutions.
Study oxidation-reduction, electrolysis and acid-base reactions as Universal Indicator is added to an aqueous sodium sulfate solution. When two carbon electrodes are connected to a battery and placed in the solution, a rainbow of colors forms as the water is electrolyzed. There are enough materials to complete the demonstration five times.
Delivery information: Kit includes: 50 ml Sodium Sulfate Solution, 1 m, 6 ml Universal Indicator, 1 red connecting wire, 1 black connecting wire, 12 carbon electrodes and 2 petri dishes.
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