Lesson 3: Pure Substances and Mixtures

Learning Objectives

By the end of this lesson, students will be able to:

1. Define pure substances and mixtures and explain their differences.
2. Understand melting and boiling points and their role in identifying purity.
3. Explain the effect of impurities on melting and boiling points.
4. Describe how to measure melting points using appropriate apparatus.
5. Understand solutions and mixtures, including solutes, solvents, and alloys.

Interactive Presentations

This document includes an interactive presentation and one question paper with an answer key.