Daily Practice

GCSE Science

7th September 1977

5 questions · GCSE · 584 questions in this band

1
Concentration, Yield and Atom Economy
Give the formula for atom economy.
2
Chemical Changes
State the pH value of a neutral solution.
3
Reactivity, Acids and Salts
Why is aluminium extracted by electrolysis rather than by reduction with carbon?
4
Electrolysis
State the two materials commonly used as inert electrodes in electrolysis, and explain why they must be inert.
5
Energy Changes
Using the values in the previous question, calculate the overall energy change for the reaction.

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