Does a concentrated solution or a diluted solution contain more particles? The 24th video in a 30-part series answers this question as an introduction to figuring concentration using the standard formulas. Through two different formula triangles, guided practice problems reinforce the calculations.

Concepts

concentration, solution concentration, concentrations, moles, formulas

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Additional Tags

science

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Instructional Ideas

• Create more difficult problems than those in the video for scholars to work on their own
• Review metric units if pupils aren't comfortable converting from cm cubed to dm cubed

Classroom Considerations

• Sample problems should not require a calculator to solve, but the resource does assume prior understanding of multiplication and division

Pros

• Provides prompts to pause the video to solve questions before learning the correct answer
• Stresses the importance of labeling units when performing calculations

Cons

• None

Common Core

RST.9-10.3 RST.9-10.4 RST.11-12.3 RST.11-12.4