Question

question 17 which of the following is a chemical change? o ice melting o water breaking down into hydrogen and oxygen o water boiling o ice being carved into a sculpture 3 pts instructions for each test item, identify the choice that best completes the statement or answers the question.

Explanation:

A chemical change results in a new substance being formed. Ice being carved into a sculpture and ice melting are physical changes as the substance remains water (H₂O) in different states. Water boiling is also a physical change from liquid to gas state of water. But water breaking down into hydrogen and oxygen involves a chemical reaction where the chemical composition changes.

Answer:

water breaking down into hydrogen and oxygen