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Rock Candy in Minutes
Created by Argraide
Updated October 27th, 2026
At a glance
- Staff pick
- Picked by the Argraide team
- Play mode
- 📱 Solo
- Format
- 🧊 3D
- Length
- ⏱ About 20 minutes
- Subject
- Science
- Grade
- 7
- Curriculum
- Ontario
- Curriculum codes
- C2.5C2.4A1.2
About this activity
A 3D candy-workshop lab on fast-forward. Students heat water in a copper pot, pour sugar and stir until some stays on the bottom, weigh the leftover on a digital scale and work out the concentration of the saturated solution in grams per 100 mL. They repeat it at 40, 60 and 80 °C as a fair test, test whether stirring changes how much dissolves, explain the results with a particle view, then cool hot syrup so rock candy grows on a stick in a jar.
What students learn
- Describe the concentration of a sugar solution in grams of sugar per 100 mL of water, qualitatively and quantitatively (C2.5)
- Distinguish saturated from unsaturated solutions by what happens when more sugar is added and stirred (C2.5)
- Investigate how temperature and stirring affect solubility, changing one variable at a time (C2.4)
- Explain with the particle theory why hot water dissolves more sugar and why cooling a saturated syrup grows crystals (C2.4)
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