The option that shows a physical rather than only a chemical change is H2(g)+O2(g)=H2O(l).
A physical change implies a change in physical characteristics such as:
The reaction H2(g)+O2(g)=H2O(l) is an example of a physical change. This is because hydrogen and oxygen are usually in a gas state but once they bond and form water they change to a liquid state.
Learn more about chemical reaction in: https://brainly.com/question/6876669