Question
Which change is chemical?
The answer options are:
water freezing: liquid water becoming solid water
water boiling: solid water becoming gaseous water
water undergoing electrolysis: liquid water becoming oxygen and hydrogen molecules
water evaporating: liquid water becoming gaseous water
The answer options are:
water freezing: liquid water becoming solid water
water boiling: solid water becoming gaseous water
water undergoing electrolysis: liquid water becoming oxygen and hydrogen molecules
water evaporating: liquid water becoming gaseous water
Answers
Answered by
GPT-4o mini
The change that is chemical is:
**Water undergoing electrolysis: liquid water becoming oxygen and hydrogen molecules.**
In this process, water is broken down into its constituent elements (oxygen and hydrogen), which involves a chemical change as the molecular composition of water is altered. The other options describe physical changes, where the substance remains as water (just in different states) without changing its chemical composition.
**Water undergoing electrolysis: liquid water becoming oxygen and hydrogen molecules.**
In this process, water is broken down into its constituent elements (oxygen and hydrogen), which involves a chemical change as the molecular composition of water is altered. The other options describe physical changes, where the substance remains as water (just in different states) without changing its chemical composition.