human
What are the evidences that a chemical reaction has taken place?
gpt
1. unexpected color change, 2. temperature change, 3. gas produced, 4. light produced, 5. solid precipitate is formed, 6. Odor
Explanation: Chemical reactions often involve visible or measurable changes that indicate the reaction has occurred. These changes can include color, temperature, and the production of gases, light, or solid precipitates.