Lesson Plan

• Define solvent, solute, solution, and saturated solution.
• Explain how temperature influences saturation.
• Demonstrate preparation of a saturated NaCl solution.
• Distinguish between filtrate and residue after a separation technique.
• Apply the terminology to design a simple dissolution experiment.

• Whiteboard and markers
• Projector with slides
• Table salt (NaCl) and distilled water
• Beakers, stirring rods, hot plate
• Filter paper and funnel
• Thermometer
• Worksheet with key terms and practice questions

Begin with a quick demonstration of salt dissolving in water to spark curiosity. Review prior knowledge of mixtures and ask students to predict what happens when more salt is added. Explain that today they will master the terminology needed to describe solutions and their saturation.

1. Do‑now (5'): Students write definitions of solvent, solute, and solution on sticky notes (check for understanding).
2. Teacher presentation (10'): Slide deck defining all four terms and illustrating the NaCl example.
3. Guided lab activity (20'): Students prepare a saturated NaCl solution, note when no more dissolves, and record the temperature.
4. Separation demonstration (10'): Evaporation and filtration to obtain residue and filtrate; discuss observations.
5. Group discussion (10'): Compare filtrate vs. residue and link back to terminology.
6. Quick quiz (5'): Exit‑ticket matching terms to definitions.

Recap the four key terms and how they related during the lab activity. Students complete an exit ticket matching each term to its definition. For homework, assign a short worksheet to design a simple experiment using a different solvent.