(a) describe methods of separations and purification for the components of the following types of mixtures:
(i) solid-solid
(ii) solid-liquid
(iii) liquid-liquid (miscible and immiscible)
Techniques to be covered for separations and purification include:
(i) use of a suitable solvent, filtration and crystallisation or evaporation
(ii) sublimation
(iii) distillation and fractional distillation
(iv) use of a separating funnel
(v) paper chromatography
(b) describe paper chromatography and interpret chromatograms including comparison with ‘known’ samples and the use of Rf values
(c) explain the need to use locating agents in the chromatography of colourless compounds
(d) deduce from the given melting point and boiling point the identities of substances and their purity
(e) explain that the measurement of purity in substances used in everyday life, e.g. foodstuffs and drugs, is important
O Level - Combined Chemistry
(a) describe methods of separations and purification for the components of the following types of mixtures:
(i) solid-solid
(ii) solid-liquid
(iii) liquid-liquid (miscible)
Techniques to be covered for separations and purification include:
(i) use of a suitable solvent, filtration and crystallisation or evaporation
(ii) distillation and fractional distillation
(iii) paper chromatography
(b) describe paper chromatography and interpret chromatograms
(c) deduce from the given melting point and boiling point the identities of substances and their purity
N(A) Level - Combined Chemistry
(a) describe methods of separations and purification for the components of the following types of mixtures:
(i) solid-solid
(ii) solid-liquid
(iii) liquid-liquid (miscible)
Techniques to be covered for separations and purification include:
(i) use of a suitable solvent, filtration and crystallisation or evaporation
(ii) distillation and fractional distillation
(iii) paper chromatography
(b) describe paper chromatography and interpret chromatograms
(c) deduce from the given melting point and boiling point the identities of substances and their purity
- Syllabuses from SEAB
Feel free to post questions related to this topic below. Do include your name and class (i.e. John, 4E3). Also, if you know the answers to questions that your friends posted, do respond to them!
No comments:
Post a Comment