Questions: Required practicals and maths skills
Pick a question type. Each time you get new numbers. Free ones are marked free.
Units, numbers and ratios
- cm³ and dm³Calculate, 1 mark, free
- Grams, kilograms and tonnesCalculate, 1 mark, free
- Rounding to significant figuresCalculate, 1 mark, free
- Particles in standard formCalculate, 2 marks, free
- Percentages from dataCalculate, 2 marks, free
- Mole ratios from an equationCalculate, 2 marks, free
- Concentration in g/dm³Calculate, 2 marks, free
Measuring and uncertainty
- Choosing the most precise apparatusChoose, 1 mark, free
- Mean leaving out an anomalyCalculate, 2 marks, free
- Uncertainty as half the rangeCalculate, 2 marks, free
- Random and systematic errorsChoose, 1 mark, free
- Accurate, precise, repeatableChoose, 1 mark, free
- Independent, dependent and control variablesChoose, 1 mark, free
- Reading a measuring cylinderChoose, 1 mark, free
Titration skills
- Titres from burette readingsCalculate, 1 mark, Plus
- Mean of concordant titresCalculate, 2 marks, Plus, Chemistry only
- Titration techniqueChoose, 1 mark, Plus, Chemistry only
- Concentration from a titrationCalculate, 4 marks, Plus, Chemistry only, Higher tier
- Indicator coloursChoose, 1 mark, Plus
- Plan a titration (6 marks)Describe, 6 marks, Plus, Chemistry only
Graphs and rates
- Rate from the gradient of a straight lineCalculate, 2 marks, Plus
- Mean rate between two timesCalculate, 2 marks, Plus
- Proportional or just linearChoose, 1 mark, Plus
- Rate as 1000 ÷ timeCalculate, 1 mark, Plus
- Reading between points on a lineEstimate, 1 mark, Plus
- Rate at one moment from a tangentCalculate, 3 marks, Plus, Higher tier
The equations you learn
- Rearranging a chemistry equationRearrange, 1 mark, Plus
- Which equation to useChoose, 1 mark, Plus
- Gas volume from molesCalculate, 2 marks, Plus, Chemistry only, Higher tier
- Relative formula massCalculate, 2 marks, Plus
- Percentage yieldCalculate, 2 marks, Plus, Chemistry only
- Recall or givenChoose, 1 mark, Plus
- Concentration in mol/dm³Calculate, 2 marks, Plus, Chemistry only, Higher tier
- Atom economyCalculate, 3 marks, Plus, Chemistry only
Required practicals review
- What each required practical measuresChoose, 1 mark, Plus
- Hazards and control measuresChoose, 1 mark, Plus
- Making a soluble salt: what comes nextChoose, 1 mark, Plus
- Mass of dissolved solids in waterCalculate, 3 marks, Plus
- Improving an experimentChoose, 1 mark, Plus
- Plan an investigation (6 marks)Describe, 6 marks, Plus
- Rf from a chromatogramCalculate, 2 marks, Plus
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