Question
Classify the following chemical reactions as exothermic or endothermic.(4 points)
Exothermic Endothermic
Fireworks explode. The fireworks are the system.
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.
The chemicals in a hot pack are mixed together and the temperature increases. The hot pack is the system.
Exothermic Endothermic
Fireworks explode. The fireworks are the system.
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.
The chemicals in a hot pack are mixed together and the temperature increases. The hot pack is the system.
Answers
GPT-4o mini
Here’s the classification of the chemical reactions:
**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.
In 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.
In summary:
- Exothermic: Fireworks, hot pack
- Endothermic: Photosynthesis, cold pack