percentage uncertainty
What percentage uncertainty means in Chemistry A-Level, as defined for AQA.
Definition of percentage uncertainty
Check what you remember
Read the wording for your board, then hide it and explain percentage uncertainty in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
A value in the temperature change calculated from the resolution of the thermometer, which more solid in the same volume of water lowers.
Topics that use percentage uncertainty
- Calorimetry (AQA A-Level)
Related terms
- heat change q
- extrapolation to time of mixing
- insulation and heat loss
- mass of solution
- specific heat capacity
- temperature against time graph
- temperature change
Using percentage uncertainty in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
Practise Chemistry questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
A week of Premium from your first lesson · Then the free plan continues · No card, no charge