Purity, Formulations, and Chromatography
Students learn to distinguish between pure substances and mixtures, including formulations. They will use paper chromatography to separate and identify substances.
About This Topic
Students learn to distinguish between pure substances and mixtures, including formulations. They will use paper chromatography to separate and identify substances.
Key Questions
- How does melting point indicate the purity of a substance?
- What is a formulation and why are they important?
- How do we calculate Rf values in chromatography?
Planning templates for Chemistry
More in Chemical Analysis
Identification of Common Gases
A practical review of the standard laboratory tests for common gases. Students will describe the positive results for hydrogen, oxygen, carbon dioxide, and chlorine.
2 methodologies
Flame Tests and Metal Ion Identification
Students perform flame tests to identify metal cations and use sodium hydroxide to precipitate metal hydroxides. They will record and analyse their observations.
2 methodologies
Instrumental Methods of Analysis
An introduction to modern instrumental techniques such as flame emission spectroscopy. Students will evaluate the advantages of instrumental methods over chemical tests.
2 methodologies