Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
14th November 2017
- 1Concentration, Yield and Atom Economy
Calculate the concentration in moles per cubic decimetre of a solution containing 0.5 mol in 250 cubic centimetres.
- 2Chemical Changes
Write the word equation for the reaction between zinc and hydrochloric acid.
- 3Reactivity, Acids and Salts
Name the salt made from zinc oxide and nitric acid.
- 4Electrolysis
Concentrated sodium chloride solution (brine) is electrolysed using inert electrodes. State the products formed at the cathode and at the anode.
- 5Energy Changes
State whether the combustion of methane is exothermic or endothermic.
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