Which one of these represents a physical change?

Question

Quizplus · Accepted Answer

When water is heated and turns into steam, it is a physical change because the substance is still water, just in a different state of matter. No new substances are created. Bleach turning hair yellow is a chemical change (B), because the bleach is reacting with the hair and altering its color. Sugar turning brown when heated (C) is also a chemical change, as the heat causes the sugar molecules to break down and form new compounds with different properties. Milk turning sour (D) is a chemical change, as the lactic acid bacteria in the milk ferment the lactose into lactic acid. Apples turning brown (E) is also a chemical change, as the exposure to oxygen causes enzymes in the apple to oxidize compounds and form new ones with a different color.

Which One of These Represents a Physical Change