It'd be a physical change. This is because it's a change in the state of matter and not altering the chemical structure of water
Answer:
They are called insulators
Answer: Option (c) is the correct answer.
Explanation:
When a system is open then there will be exchange of energy between the system and surrounding.
Whereas when a system is closed then there will be no exchange of energy, that is, thermal energy will not flow into the atmosphere.
Thus, we can conclude that a sealed calorimeter is a closed system because thermal energy is not transferred to the environment.
I think the answer is:
B. Chemical Change.
molecules of the gas.
number of molecules. It means that,