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5. Formula and amounts (UNCERTAINTY + ERRORS)
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Total cards: 6•Content version: v4•Public deck•Updated: 8/1/2026
Card preview (6)
#1
Front (Question)
What is uncertainty
Back (Answer)
The maximum error you could have on a measurement
#2
Front (Question)
symbol for uncertainty
Back (Answer)
±
#3
Front (Question)
What is the uncertainty for an apparatus
Back (Answer)
The uncertainty for an apparatus is half the smallest increment it can measure eg: a burette measures to the nearest 0.1 cm3 so 0.1 divided by 2 is 0.05cm3
#4
Front (Question)
Give the equation to calculate percentage uncertainty
Back (Answer)
percentage uncertainty = uncertainty / reading x100
#5
Front (Question)
When do you times the uncertainty by 2 when calculating % uncertainty
Back (Answer)
When 2 measurements are taken on the apparatus eg: burette, balance
#6
Front (Question)
Give 2 ways to minimise percentage uncertainty
Back (Answer)
• increase resolution of apparatus • increase size of measurement