Lesson Plan: Solutions (LP0019)

Learning objectives

1. The liquid that dissolves a substance is called the solvent. The substance that is dissolved is called the solute.
2. When solutions are formed we sometimes get changes in colour.
3. A substance's ability to dissolve is known as its solubility. The solubility of a substance is usually given in g/100cm³
.
4. When no more solid can be dissolved the solution is saturated
.

Resources

• Crocodile Chemistry 1.5 (or later)
• LF0019a "Forming solutions"
• LF0019b "Solutions, solubility and saturation"

Procedure

1. Ensure Crocodile Chemistry 1.5 (or later) is installed and the simulation files LF0019a and LF0019b are accessible.
2. Introduce and explain the learning objectives listed above.
3. Complete lesson activity LA0019.
4. Discuss the activity and the related points listed below.

Classroom discussion points

• The extraction of solutes from solution (evaporation).
• The extraction of solvents from solution (distillation).

Assessment

• Completion of lesson activity LA0019.
• Observation of the students at work and response to discussion work.

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