Daily Practice · GCSE Science

Daily Practice - GCSE Science

14th August 1997

5 questions · GCSE · 584 questions in this band

1
Structures, Properties and Nanoparticles
Why does simple molecular carbon dioxide have a much lower melting point than giant covalent silicon dioxide?
2
Quantitative Chemistry
Calculate the number of moles in 20 g of calcium carbonate. (Mr = 100)
3
Moles, Formulae and Equations
State the value of the Avogadro constant and what it counts.
4
Concentration, Yield and Atom Economy
Convert a concentration of 0.20 moles per cubic decimetre of NaOH into grams per cubic decimetre. (Mr = 40)
5
Chemical Changes
State the pH value of a neutral solution.

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