Daily Practice

GCSE Science

4th September 1963

5 questions · GCSE · 584 questions in this band

1
Moles, Formulae and Equations
State the value of the Avogadro constant and what it counts.
2
Concentration, Yield and Atom Economy
Convert a concentration of 0.20 moles per cubic decimetre of NaOH into grams per cubic decimetre. (Mr = 40)
3
Chemical Changes
State the pH value of a neutral solution.
4
Reactivity, Acids and Salts
Define oxidation in terms of electrons.
5
Electrolysis
State the two materials commonly used as inert electrodes in electrolysis, and explain why they must be inert.

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