Final answer:
The incorrect statement is 'E. Liquid water turning into steam is a chemical reaction.' This is wrong because it's a physical change, representing a phase transition where no chemical bonds are altered.
Step-by-step explanation:
The statement that is not correct is E. Liquid water turning in steam is a chemical reaction. When liquid water turns into steam, it undergoes a physical change called vaporization or evaporation. In this process, the water molecules gain enough energy to overcome the forces holding them together and escape as gas. This change in state does not involve any chemical reactions or the formation of new substances.
The statement among the options that is not correct is E. Liquid water turning into steam is a chemical reaction. This statement is inaccurate because the process of liquid water turning into steam is known as boiling or vaporization, and it is indeed a physical change. No chemical bonds are broken or formed during this change, and the water remains as H₂O in both the liquid and gas phases. This change could be written as: H₂O (l) → H₂O (g).
On the other hand, burning methanol (statement B) and bleaching your hair (statement D) are both examples of chemical reactions as new substances are formed. Whereas, dry ice subliming (statement A) and sugar dissolving in water (statement C) are physical changes because they only affect the physical form, not the chemical identity, of the substance.