GCSE Chemistry Specification

OCR A J248

Section C7.PAG: Practical skills

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#C7.PAG1

Reactivity trend

Use of displacement reactions to identify the reaction trend of Group 7 elements.

#C7.PAG2

Electrolysis

Electrolysis of aqueous sodium chloride or aqueous copper sulfate solution testing for the gases produced.

#C7.PAG3

Separation techniques

Use of chromatography to identify the mixtures of dyes in an unknown ink.

#C7.PAG4

Distillation

Distillation of a mixture, for example, orange juice, cherry cola, hydrocarbons, inks.

#C7.PAG5

Identification of species

Identify an unknown compound using cation tests, anion tests and flame tests.

#C7.PAG6

Titration

Titration of a strong acid and strong alkali to find the concentration of the acid using an appropriate pH indicator.

#C7.PAG7

Production of salts

Production of pure dry sample of a salt.

#C7.PAG8

Measuring rates of reaction

Investigate the effect of surface area or concentration on the rate of an acid/carbonate reaction.