Question
Classify the following chemical reactions as exothermic or endothermic.(4 points)
Exothermic Endothermic
A plant absorbs sun rays for photosynthesis. The plant is the system.
The chemicals in a cold pack are mixed together and the temperature decreases. The cold pack is the system.
Fireworks explode. The fireworks are the system.
The chemicals in a hot pack are mixed together and the temperature increases. The hot pack is the system.
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Exothermic Endothermic
A plant absorbs sun rays for photosynthesis. The plant is the system.
The chemicals in a cold pack are mixed together and the temperature decreases. The cold pack is the system.
Fireworks explode. The fireworks are the system.
The chemicals in a hot pack are mixed together and the temperature increases. The hot pack is the system.
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Answers
GPT-4o mini
Here are the classifications for the chemical reactions you provided:
**Exothermic:**
1. Fireworks explode. The fireworks are the system.
2. The chemicals in a hot pack are mixed together and the temperature increases. The hot pack is the system.
**Endothermic:**
1. A plant absorbs sun rays for photosynthesis. The plant is the system.
2. The chemicals in a cold pack are mixed together and the temperature decreases. The cold pack is the system.
**Summary:**
- Exothermic: Fireworks, hot pack
- Endothermic: Photosynthesis, cold pack
**Exothermic:**
1. Fireworks explode. The fireworks are the system.
2. The chemicals in a hot pack are mixed together and the temperature increases. The hot pack is the system.
**Endothermic:**
1. A plant absorbs sun rays for photosynthesis. The plant is the system.
2. The chemicals in a cold pack are mixed together and the temperature decreases. The cold pack is the system.
**Summary:**
- Exothermic: Fireworks, hot pack
- Endothermic: Photosynthesis, cold pack