- The water pipe freezes
- Freezing is a kind of phase change
- So, the water pipe undergoes a phase change

- The water pipe undergoes a phase change
- A phase change is a kind of physical change
- Hence, the water pipe undergoes a physical change when it freezes

- An example of a physical change is breaking an object
- Cracking is a kind of breaking
- Hence, an object cracking is a kind of physical change

- An object cracking is a kind of physical change
- A water pipe is a kind of object
- So, the water pipe cracking is a kind of physical change

- The water pipe undergoes a physical change when it freezes
- The water pipe cracking is a kind of physical change
- A water pipe freezes and cracks on a cold night
- Hence, the water pipe freezing and cracking is an example of physical change

- The water pipe freezing and cracking is an example of physical change
- Chemical change is the opposite of physical change
- Therefore, the water pipe freezing and cracking is an example of physical change but not a chemical change

Therefore, the water pipe freezing and cracking is an example of physical change but not a chemical change
Question: Which of the following is an example of a physical change but not a chemical change?
Context: - An example of a physical change is breaking an object 
- A water pipe is a kind of object 
- A water pipe freezes and cracks on a cold night 
- A phase change is a kind of physical change 
- The water pipe freezes 
- Chemical change is the opposite of physical change 
- Cracking is a kind of breaking 
- Freezing is a kind of phase change