Lesson Plan: Creating and Using Solubility Graphs

Grade Level: Year 10

Objective: Students will be able to create and use solubility graphs to determine the solubility of different substances at different temperatures.

Materials: - Solubility graph worksheet - Beakers - Hot plate - Thermometer - Various substances (e.g. salt, sugar, baking soda) - Water

Procedure:

Introduction: 1. Begin the lesson by asking students if they have ever noticed that some substances dissolve better in water than others. 2. Ask students if they know what solubility is and how it can be affected by temperature. 3. Introduce the concept of solubility graphs and explain that they are used to determine the solubility of different substances at different temperatures.

Activity: 1. Divide students into groups of 3-4 and provide each group with a solubility graph worksheet. 2. Instruct students to choose three different substances (e.g. salt, sugar, baking soda) and measure out 10g of each substance. 3. Have students add each substance to a separate beaker filled with 100mL of water. 4. Using a hot plate, heat each beaker to a different temperature (e.g. 20°C, 40°C, 60°C) and stir until the substance has completely dissolved. 5. Have students record the temperature and the amount of substance that was able to dissolve in each beaker on their solubility graph worksheet. 6. Once all groups have completed their experiments, have them share their results with the class and discuss any patterns or trends they noticed.

Conclusion: 1. Review the concept of solubility and how it can be affected by temperature. 2. Ask students to reflect on what they learned from the activity and how they could apply this knowledge in real-life situations. 3. Assign homework where students research and report on the solubility of a substance at different temperatures.

Assessment: - Students will be assessed on their ability to create and use a solubility graph to determine the solubility of different substances at different temperatures. - Students will also be assessed on their ability to work collaboratively in groups and communicate their findings effectively.