Question

When water is heated, bubbles form in the water. Is this evidence of a chemical reaction? Why? Question 2 options: No, boiling water is a physical change. Yes, the formation of a gas is evidence of a chemical reaction. No, the formation of gas bubbles is a secondary chemical reaction which is ignored. Yes, the formation of a gas is proof a new compound has been made. none of the above

Answer 1

Answer: No, boiling water is a physical change.

Explanation:

Physical change is a change in which there is no rearrangement of atoms and thus no new substance is formed. There is only change in physical state of the substance.

Boiling water  is a physical change as liquid changes to gaseous state and no new substance is being formed.

Chemical change is a change in which there is rearrangement of atoms and thus new substance is formed. There may or may not be a change in physical state.