Daily Practice · GCSE Science
Daily Practice - GCSE Science
Biology, chemistry and physics recall, definition and calculation, drawn from every strand.
- 1Concentration, Yield and Atom Economy
State two reasons why a percentage yield is less than 100 percent.
- 2Chemical Changes
Calculate the number of moles of sodium hydroxide in 200 cm3 of a 0.500 mol/dm3 solution.
- 3Reactivity, Acids and Salts
Complete: acid + metal carbonate gives ...
- 4Electrolysis
State the two materials commonly used as inert electrodes in electrolysis, and explain why they must be inert.
- 5Energy Changes
Give one everyday example of an endothermic process.
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