Chemistry A-Level
averaged data
What averaged data means in Chemistry A-Level, as defined for AQA.
Definition of averaged data
Check what you remember
Read the wording for your board, then hide it and explain averaged data in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
Tabulated figures are averages, not exact values for specific molecules, so the answer often disagrees with a Hess's law value.
Topics that use averaged data
- Bond enthalpies (AQA A-Level)
Related terms
- always endothermic
- averaged over compounds
- gaseous state
- mean bond enthalpy
- bonds broken minus bonds made
- gaseous phase assumption
Using averaged data 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.
Start free
All Chemistry A-Level termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge