Purity, Formulations, and Chromatography
Students learn to distinguish between pure substances and mixtures, and understand the importance of formulations. Practical skills in paper chromatography are developed to separate and identify substances.
About This Topic
Students learn to distinguish between pure substances and mixtures, and understand the importance of formulations. Practical skills in paper chromatography are developed to separate and identify substances.
Key Questions
- How do we define a pure substance in chemistry?
- What are formulations and why are they useful?
- How does chromatography separate mixtures?
Planning templates for Combined Science
5E Model
The 5E Model structures lessons through five phases (Engage, Explore, Explain, Elaborate, and Evaluate), guiding students from curiosity to deep understanding through inquiry-based learning.
Unit PlannerThematic Unit
Organize a multi-week unit around a central theme or essential question that cuts across topics, texts, and disciplines, helping students see connections and build deeper understanding.
RubricSingle-Point Rubric
Build a single-point rubric that defines only the "meets standard" level, leaving space for teachers to document what exceeded and what fell short. Simple to create, easy for students to understand.
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