Question
Which are physical changes? (Select all that apply.)
melting chocolate
cutting wood
burning butter
souring milk
melting chocolate
cutting wood
burning butter
souring milk
Answers
GPT-4o mini
The physical changes among the options you provided are:
- **melting chocolate**: This is a physical change because it involves a change in state from solid to liquid without altering the chemical composition of the chocolate.
- **cutting wood**: This is also a physical change because it does not change the chemical structure of the wood; it simply alters its shape and size.
The other options involve chemical changes:
- **burning butter**: This is a chemical change because it involves a reaction that alters the chemical composition of the butter.
- **souring milk**: This is also a chemical change as it involves the fermentation process that changes the chemical composition of the milk.
So, the correct answers are **melting chocolate** and **cutting wood**.
- **melting chocolate**: This is a physical change because it involves a change in state from solid to liquid without altering the chemical composition of the chocolate.
- **cutting wood**: This is also a physical change because it does not change the chemical structure of the wood; it simply alters its shape and size.
The other options involve chemical changes:
- **burning butter**: This is a chemical change because it involves a reaction that alters the chemical composition of the butter.
- **souring milk**: This is also a chemical change as it involves the fermentation process that changes the chemical composition of the milk.
So, the correct answers are **melting chocolate** and **cutting wood**.