Student Exploration: Solubility and Temperature Vocabulary: concentration, dissolve, homogeneous mixture, solubility, solubility curve, solute, solution, solvent Prior Knowledge Questions (Do these... BEFORE using the Gizmo.) 1. What happens when you stir a spoonful of sugar into hot water? The sugar will dissolve. _________________________________________________________________________ 2. When sugar or another substance is dissolved in water, it disappears from view and forms a homogeneous mixture with the water, also called a solution. If you can’t see the sugar, how can you tell that it is there? If you taste the water, you can telll if it has sugar. _________________________________________________________________________ 3. Does sugar dissolve more easily in hot water or cold water? Hot water Gizmo Warm-up A solution generally consists of two parts, a solute that is dissolved and a solvent that the solute is dissolved into. For example, sugar is a solute that is dissolved into the solvent water. In the Solubility and Temperature Gizmo™, you will study how temperature affects how much solute will dissolve in a solution. To begin, check that Potassium nitrate is selected and the Temp. of the water is 20 °C. Click OK. 1. In this solution, what is the solute? Potassium Nitrate What is the solvent? Water [Show More]
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