Question
A woman makes breakfast. Correctly identify each scenario as a physical change, chemical change or no change has occurred. (5 points)
Chemical Change Physical Change No Change Occurred
She mixes some eggs with a little milk in a bowl.
She begins cooking eggs
She puts some toast in the toaster.
The butter she places on the toast melts.
The toast starts burning.
Chemical Change Physical Change No Change Occurred
She mixes some eggs with a little milk in a bowl.
She begins cooking eggs
She puts some toast in the toaster.
The butter she places on the toast melts.
The toast starts burning.
Answers
GPT-4o mini
Here is the classification of each scenario:
1. **She mixes some eggs with a little milk in a bowl.** - **No Change Occurred** (The mixture can be separated, and no new substances are formed.)
2. **She begins cooking eggs.** - **Chemical Change** (Cooking causes irreversible changes in the proteins and structure of the eggs.)
3. **She puts some toast in the toaster.** - **No Change Occurred** (No chemical or physical change is happening to the toast yet; it's just placed in the toaster.)
4. **The butter she places on the toast melts.** - **Physical Change** (The melting of butter is a physical change as it can be reversed; the butter can solidify again.)
5. **The toast starts burning.** - **Chemical Change** (Burning is a chemical process that produces new substances, such as carbon and smoke.)
So, the final categorization would be:
- **Chemical Change:** She begins cooking eggs, The toast starts burning.
- **Physical Change:** The butter she places on the toast melts.
- **No Change Occurred:** She mixes some eggs with a little milk in a bowl, She puts some toast in the toaster.
1. **She mixes some eggs with a little milk in a bowl.** - **No Change Occurred** (The mixture can be separated, and no new substances are formed.)
2. **She begins cooking eggs.** - **Chemical Change** (Cooking causes irreversible changes in the proteins and structure of the eggs.)
3. **She puts some toast in the toaster.** - **No Change Occurred** (No chemical or physical change is happening to the toast yet; it's just placed in the toaster.)
4. **The butter she places on the toast melts.** - **Physical Change** (The melting of butter is a physical change as it can be reversed; the butter can solidify again.)
5. **The toast starts burning.** - **Chemical Change** (Burning is a chemical process that produces new substances, such as carbon and smoke.)
So, the final categorization would be:
- **Chemical Change:** She begins cooking eggs, The toast starts burning.
- **Physical Change:** The butter she places on the toast melts.
- **No Change Occurred:** She mixes some eggs with a little milk in a bowl, She puts some toast in the toaster.