# Enthalpy Changes and Calorimetry

Central concept: **Enthalpy & Calorimetry**

## Connections

- Enthalpy & Calorimetry (defines) -> Enthalpy
- Enthalpy (expressed as) -> Molar Enthalpy
- Enthalpy & Calorimetry (uses) -> ΔH Notation
- ΔH Notation (indicates) -> Exothermic (−ΔH)
- ΔH Notation (indicates) -> Endothermic (+ΔH)
- Enthalpy & Calorimetry (applies) -> Q = mcΔt
- Q = mcΔt (analyzes) -> Heat Transfer
- Enthalpy & Calorimetry (relies on) -> Calorimetry Data
- Calorimetry Data (measures) -> Heat Transfer
- Enthalpy & Calorimetry (investigated by) -> Calorimeter Design
- Enthalpy & Calorimetry (investigated by) -> Combustion Lab
- Calorimeter Design (evaluates) -> Experimental Error
- Combustion Lab (produces) -> Calorimetry Data

## Notes

- **Enthalpy & Calorimetry**: Determining and interpreting energy changes in chemical reactions ([Topic](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23633)). [Topic](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23633)
- **Enthalpy**: Defined as heat content of a system; molar enthalpy expresses this per mole of substance reacting ([Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23636), [Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23636)). [Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23636), [Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23636)
- **Molar Enthalpy**: Enthalpy change expressed per mole of a reactant or product ([Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23636), [Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23636)). [Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23636), [Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23636)
- **ΔH Notation**: Used to communicate and calculate energy changes in reactions ([Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23638)). [Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23638)
- **Exothermic (−ΔH)**: Reaction releases energy, shown by negative ΔH notation ([Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23638)). [Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23638)
- **Endothermic (+ΔH)**: Reaction absorbs energy, shown by positive ΔH notation ([Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23638)). [Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23638)
- **Q = mcΔt**: Equation applied to analyze heat transfer between substances ([Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23634), [Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23634)). [Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23634), [Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23634)
- **Heat Transfer**: Movement of thermal energy analyzed using Q = mcΔt ([Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23634), [Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23634)). [Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23634), [Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23634)
- **Calorimetry Data**: Temperature and mass data used to determine enthalpy changes in reactions ([Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23641)). [Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23641)
- **Calorimeter Design**: Building and testing a polystyrene-cup calorimeter to evaluate precision ([Resource](https://goa-cc-uat-aili-app-001.azurewebsites.net/library/resource/0uxhxD914kqzmssVwCK4tg)). [Resource](https://goa-cc-uat-aili-app-001.azurewebsites.net/library/resource/0uxhxD914kqzmssVwCK4tg)
- **Combustion Lab**: Measures heat released when burning a substance to transfer energy to water ([Resource](https://goa-cc-uat-aili-app-001.azurewebsites.net/library/resource/9ykNTynh306g6EnZlkTITQ)). [Resource](https://goa-cc-uat-aili-app-001.azurewebsites.net/library/resource/9ykNTynh306g6EnZlkTITQ)
- **Experimental Error**: Evaluated through repeated trials and data collection in calorimeter testing ([Resource](https://goa-cc-uat-aili-app-001.azurewebsites.net/library/resource/0uxhxD914kqzmssVwCK4tg)). [Resource](https://goa-cc-uat-aili-app-001.azurewebsites.net/library/resource/0uxhxD914kqzmssVwCK4tg)

![Enthalpy Changes and Calorimetry](https://goa-cc-uat-aili-app-001.azurewebsites.net/api/generate/0876eeca-3243-4db2-ba71-24c4767649e2/asset/950)

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*AILI word map · language en · model claude-sonnet-5 · generated 2026-09-17 · id 0876eeca-3243-4db2-ba71-24c4767649e2*

### Sources

- node:n1: Chemistry › Chemistry (20, 30) › Chemistry 30 › Unit A: Thermochemical Changes › General Outcome 1 (https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23636)
- node:n2: Chemistry › Chemistry (20, 30) › Chemistry 30 › Unit A: Thermochemical Changes › General Outcome 1 (https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23634)
- node:n3: Chemistry › Chemistry (20, 30) › Chemistry 30 › Unit A: Thermochemical Changes › General Outcome 1 (https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23641)
- node:n4: Chemistry › Chemistry (20, 30) › Chemistry 30 › Unit A: Thermochemical Changes › General Outcome 1 (https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23634)
- node:n5: Chemistry › Chemistry (20, 30) › Chemistry 30 › Unit A: Thermochemical Changes › General Outcome 1 (https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23636)
- resource:r1: Resources › type#activity › SCN3796 (https://goa-cc-uat-aili-app-001.azurewebsites.net/library/resource/9ykNTynh306g6EnZlkTITQ)
- node:n6: Chemistry › Chemistry (20, 30) › Chemistry 30 › Unit A: Thermochemical Changes › General Outcome 1 (https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23638)
- node:n7: Chemistry › Chemistry (20, 30) › Chemistry 30 › Unit A: Thermochemical Changes (https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23633)
- resource:r2: Resources › type#activity › SCN3796 (https://goa-cc-uat-aili-app-001.azurewebsites.net/library/resource/0uxhxD914kqzmssVwCK4tg)