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Solutes and Solubility
Investigation 3
Investigation 3
Solutes and Solubility
Phase 1 – Defined Understanding
Student Guide
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Student Guide with answers
Teacher PreLab
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Phase 2 – Dynamic Understanding
► Investigation Three Summary – Stirring and Solubility
In Investigation Three, you analyzed how heating affects the solubility of different chemical compounds. During this Investigation, you:
1. Tested the effect of using cold and hot water on the rate of solubility for sugar, salt, and baking soda.
► Investigation Three Summary – Learning Goals
Through these experiments, you concluded that:
1. Changing the temperature of the solvent affects the solubility of a solute. More solute can dissolve in a higher-temperature solvent than in a lower-temperature solvent.
2. The rate of solubility of a solute can be changed by using a solvent of a different temperature. The rate of solubility increases as the temperature of the solvent increases and decreases as the temperature of the solvent decreases.
Concept Slides
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Mathematics Concepts in This Investigation
- calculate the rate of solubility (g/min)
- data table
- analyzing chemical formulas
- mass in grams
- decimals to the nearest tenth
- time in minutes
- temperature in Celsius
- predict/verify results
- greater than/less than/equal to
- data analysis
- problem-solving