Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
- 1Structures, Properties and Nanoparticles
Why does simple molecular carbon dioxide have a much lower melting point than giant covalent silicon dioxide?
- 2Quantitative Chemistry
Calculate the number of moles in 20 g of calcium carbonate. (Mr = 100)
- 3Moles, Formulae and Equations
State the value of the Avogadro constant and what it counts.
- 4Concentration, Yield and Atom Economy
Convert a concentration of 0.20 moles per cubic decimetre of NaOH into grams per cubic decimetre. (Mr = 40)
- 5Chemical Changes
Write the word equation for the reaction between zinc and hydrochloric acid.
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