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The Dissolving Speed Lab
Created by Argraide
Updated October 27th, 2026
At a glance
- Staff pick
- Picked by the Argraide team
- Play mode
- 📱 Solo
- Format
- 🖼️ 2D
- Length
- ⏱ About 20 minutes
- Subject
- Science
- Grade
- 7
- Curriculum
- Ontario
- Curriculum codes
- C2.4A1.2C2.5
About this activity
A 2D test bench with three identical beakers, a big digital stopwatch and a results board. Students design fair tests with sliders (water temperature, stirring, sugar cube / granulated / icing sugar), predict the winner, race the sugar three trials at a time and read their own results board to compare the times. They explain each result with a particle view, then use test tubes to find that stirring and piece size change how fast sugar dissolves but only temperature changes how much can dissolve.
What students learn
- Plan fair tests that change one variable at a time and name the independent, dependent and controlled variables (Strand A skills applied to C2.4)
- Use repeated, timed trials to show how water temperature, stirring and particle size affect the rate of dissolving (C2.4)
- Explain each factor with the particle theory: faster water particles, fresh water brought to the surface, more surface area (C2.4)
- Tell the rate of dissolving apart from solubility: stirring and crushing change how fast, temperature also changes how much (C2.4)
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