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Chemistry 0620

12. Experimental techniques and chemical analysis

Apparatus and measurement, titrations, chromatography, separation methods, and identifying ions and gases.

  1. 12.1

    Experimental design

    Choosing apparatus, measuring accurately, and assessing purity.

    Full lesson2 questions3 cards
    • 12.1.1Name and use appropriate apparatus for measuring time, temperature, mass and volume.
    • 12.1.2Suggest suitable methods of purification and identify sources of error.
  2. 12.2

    Acid–base titrations

    Titration procedure, indicators, and concordant results.

    Full lesson4 questions3 cardsReview first: 7.1, 3.3
    • 12.2.1Describe how to carry out an acid–base titration and select an appropriate indicator.
  3. 12.3

    Chromatography

    Paper chromatography, locating agents, and Rf values.

    Full lesson2 questions3 cards
    • 12.3.1Describe paper chromatography and interpret chromatograms, including calculating Rf values.
  4. 12.4

    Separation and purification

    Filtration, crystallisation, simple and fractional distillation.

    Full lesson2 questions4 cards
    • 12.4.1Describe and explain methods of separation and purification and select the appropriate method for a given mixture.
  5. 12.5

    Identification of ions and gases

    Flame tests, tests for cations, anions and gases.

    Full lesson3 questions5 cardsReview first: 7.1
    • 12.5.1Describe tests for common cations, anions and gases and state the observations.
12 Experimental techniques and chemical analysis · IGCSE Science Lab