Question
Which of the following is an example of only a physical change?(1 point)
Responses
the green color of the Statue of Liberty
the smell of rotten eggs
the creation of table salt
dry ice becoming vapor
Responses
the green color of the Statue of Liberty
the smell of rotten eggs
the creation of table salt
dry ice becoming vapor
Answers
GPT-4o mini
The example of only a physical change from the options provided is **dry ice becoming vapor**. This process involves a phase change from solid to gas (sublimation) without a change in the chemical composition of the substance.
The other options involve either chemical changes or characteristics that do not qualify as physical changes:
- The green color of the Statue of Liberty is a result of a chemical reaction (the patina on copper).
- The smell of rotten eggs is a sensory characteristic related to a chemical compound (hydrogen sulfide).
- The creation of table salt (sodium chloride) involves a chemical reaction between acids and bases.
So the correct answer is **dry ice becoming vapor**.
The other options involve either chemical changes or characteristics that do not qualify as physical changes:
- The green color of the Statue of Liberty is a result of a chemical reaction (the patina on copper).
- The smell of rotten eggs is a sensory characteristic related to a chemical compound (hydrogen sulfide).
- The creation of table salt (sodium chloride) involves a chemical reaction between acids and bases.
So the correct answer is **dry ice becoming vapor**.