# Enthalpy Changes and Calorimetry Crossword

In Chemistry 30, you determine and interpret energy changes in chemical reactions ([Topic](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23633)). This crossword reinforces key vocabulary and concepts from Unit A: Thermochemical Changes. You will encounter terms related to calorimetry, enthalpy notation, and the types of reactions you analyze quantitatively ([Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23641)). Use calorimetry data to calculate enthalpy changes ([Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23641)), apply the heat equation Q = mcΔt ([Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23634)), and define enthalpy and molar enthalpy for reactions ([Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23636)). Mastery of these terms supports your ability to use ΔH notation and interpret energy diagrams ([Outcome](https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23638)).

## How to play

Complete the crossword by filling in the words that match the clues below. Each answer is a term from thermochemistry. Write one letter per cell. Check your work against the answer key after you finish.

## Puzzle grid

| ■ | ■ | ■ | P | R | E | C | I | S | I | O | N | ■ | ■ | ■ |
|:---:|:---:|:---:|:---:|:---:|:---:|:---:|:---:|:---:|:---:|:---:|:---:|:---:|:---:|:---:|
| ■ | ■ | E | ■ | ■ | ■ | A | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ |
| ■ | ■ | X | ■ | ■ | ■ | L | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ |
| ■ | ■ | O | ■ | ■ | ■ | O | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ |
| ■ | ■ | T | ■ | ■ | ■ | R | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ |
| ■ | ■ | H | ■ | ■ | ■ | I | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ |
| ■ | ■ | E | ■ | T | E | M | P | E | R | A | T | U | R | E |
| ■ | ■ | R | ■ | ■ | ■ | E | ■ | ■ | ■ | ■ | ■ | ■ | ■ | N |
| C | O | M | B | U | S | T | I | O | N | ■ | F | ■ | ■ | T |
| ■ | ■ | I | ■ | ■ | ■ | E | ■ | ■ | ■ | ■ | O | ■ | ■ | H |
| ■ | ■ | C | A | L | O | R | I | M | E | T | R | Y | ■ | A |
| ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | M | ■ | ■ | L |
| ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | A | ■ | ■ | P |
| ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | T | ■ | ■ | Y |
| ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | I | ■ | ■ | ■ |
| ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | O | ■ | ■ | ■ |
| ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | ■ | N | ■ | ■ | ■ |

## Clues

### Across

1. Consistency of repeated measurements in calorimeter testing (9)
4. Measure of the average kinetic energy of particles in a substance; changes recorded in calorimetry experiments (11)
6. Rapid chemical reaction in which a substance burns and releases thermal energy (10)
8. Experimental technique for measuring heat transfer in chemical reactions (11)

### Down

2. Insulated device used to measure energy released or absorbed during a reaction (11)
3. Chemical reaction that releases heat energy to the surroundings (10)
5. Heat content of a system at constant pressure, denoted ΔH in chemical equations (8)
7. Process of creating a compound from its elements; used in standard enthalpy tables (9)

## Answer key

- **1 across**: PRECISION
- **2 down**: CALORIMETER
- **3 down**: EXOTHERMIC
- **4 across**: TEMPERATURE
- **5 down**: ENTHALPY
- **6 across**: COMBUSTION
- **7 down**: FORMATION
- **8 across**: CALORIMETRY

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*AILI game · language en · model claude-haiku-4-5-20251001 · generated 2026-09-17 · id 9799e37a-d48c-42de-9026-1c6bbdbda3f8*

### 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#studentsupport, type#teachersupport › SCN3796 (https://goa-cc-uat-aili-app-001.azurewebsites.net/library/resource/YlIUl7k3G0y6R-b8XyPAGw)
- resource:r2: 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/23639)
- node:n7: Chemistry › Chemistry (20, 30) › Chemistry 30 › Unit A: Thermochemical Changes (https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23633)
- node:n8: 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:n9: Chemistry › Chemistry (20, 30) › Chemistry 30 › Unit A: Thermochemical Changes › General Outcome 1 (https://goa-cc-uat-aili-app-001.azurewebsites.net/explore/node/23648)
- resource:r3: Resources › type#activity › SCN3796 (https://goa-cc-uat-aili-app-001.azurewebsites.net/library/resource/0uxhxD914kqzmssVwCK4tg)