Question

question 5
which is the physical change?
electrolysis of water
cutting a piece of paper with scissors
metabolizing nutrients in living organisms
the reaction in a galvanic cell

Explanation:

Physical changes do not change the chemical composition of a substance. Cutting paper only changes its physical form. Electrolysis of water, metabolism in organisms, and reactions in a galvanic cell are chemical changes as they involve chemical reactions and formation of new substances.

Answer:

Cutting a piece of paper with scissors