Chemistry · A-Level · AQA · AQA A-level Chemistry - (7405) · Specification point · 3.1.4.2 · Physical chemistry · Energetics
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3.1.4.2 Calorimetry
| Content | Opportunities for skills development |
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The heat change, q, in a reaction is given by the equation where m is the mass of the substance that has a temperature change ∆T and a specific heat capacity c. Students should be able to:
Students will not be expected to recall the value of the specific heat capacity, c, of a substance. |
MS 0.0 and 1.1
Students understand that the correct units need to be used in q = mc∆T
Students report calculations to an appropriate number of significant figures, given raw data quoted to varying numbers of significant figures.
Students understand that calculated results can only be reported to the limits of the least accurate measurement.
Required practical 2 Measurement of an enthalpy change. | AT a and k PS 2.4, 3.1, 3.2, 3.3 and 4.1 Students could be asked to find ∆H for a reaction by calorimetry. Examples of reactions could include:
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