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 begins cooking eggs
She puts some toast in the toaster.
The toast starts burning.
She mixes some eggs with a little milk in a bowl.
The butter she places on the toast melts.
Chemical Change Physical Change No Change Occurred
She begins cooking eggs
She puts some toast in the toaster.
The toast starts burning.
She mixes some eggs with a little milk in a bowl.
The butter she places on the toast melts.
Answers
GPT-4o mini
Here are the classifications for each scenario:
1. **She begins cooking eggs** - **Chemical Change** (The proteins in the eggs denature and coagulate when heated, resulting in a change to their structure.)
2. **She puts some toast in the toaster.** - **No Change Occurred** (At this point, the bread is in the toaster but no physical or chemical change has yet occurred.)
3. **The toast starts burning.** - **Chemical Change** (Burning toast involves combustion, which leads to new substances being created from the bread.)
4. **She mixes some eggs with a little milk in a bowl.** - **Physical Change** (This is a physical mixing of ingredients without any chemical reaction.)
5. **The butter she places on the toast melts.** - **Physical Change** (Melting butter is a change of state from solid to liquid without any change in the chemical composition.)
1. **She begins cooking eggs** - **Chemical Change** (The proteins in the eggs denature and coagulate when heated, resulting in a change to their structure.)
2. **She puts some toast in the toaster.** - **No Change Occurred** (At this point, the bread is in the toaster but no physical or chemical change has yet occurred.)
3. **The toast starts burning.** - **Chemical Change** (Burning toast involves combustion, which leads to new substances being created from the bread.)
4. **She mixes some eggs with a little milk in a bowl.** - **Physical Change** (This is a physical mixing of ingredients without any chemical reaction.)
5. **The butter she places on the toast melts.** - **Physical Change** (Melting butter is a change of state from solid to liquid without any change in the chemical composition.)