Note:

Experimental techniques and Chemical Analysis Notes Coordinated Sciences Chemistry/  2025/2026/2027 Exams.

IGCSE Coordinated Science Chemistry Students, do not study the following information from the notes:

• Suggest advantages and disadvantages of experimental methods and apparatus
• Describe how paper chromatography is used to separate mixtures of soluble colourless substances, using a suitable solvent and a locating agent Knowledge of specific locating agents is not required
•   Describe tests to identify the anions sulfite
• Describe tests using aqueous sodium hydroxide and aqueous ammonia to identify the aqueous cations: aluminium, chromium,
• Describe tests to identify the gases: (a) ammonia, NH3, using damp red litmus paper
• Describe the use of a flame test to identify the cations: calcium and barium.

Happy Learning,

Team,

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