Daily Practice

GCSE Science

22nd December 1990

5 questions · GCSE · 584 questions in this band

1
Quantitative Chemistry
Magnesium is burned in an open crucible and the mass increases. Explain why.
2
Moles, Formulae and Equations
Why is the amount of product directly proportional to the amount of limiting reactant?
3
Concentration, Yield and Atom Economy
Give the formula for percentage yield.
4
Chemical Changes
Calculate the number of moles of sodium hydroxide in 200 cm3 of a 0.500 mol/dm3 solution.
5
Reactivity, Acids and Salts
Give the ionic equation for neutralisation.

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