Daily Practice · GCSE Science

Daily Practice - GCSE Science

6th January 1995

5 questions · GCSE · 584 questions in this band

1
Quantitative Chemistry
State the law of conservation of mass.
2
Moles, Formulae and Equations
How many atoms are there in 0.5 mol of helium?
3
Concentration, Yield and Atom Economy
Convert 250 cubic centimetres into cubic decimetres.
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
Explain the difference between a strong acid and a concentrated acid.

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