While camping, you make a snack over a campfire. You roast a marshmallow over the campfire until it is browned and put it between some chocolate and graham crackers. When you take a bite, you notice that the chocolate and marshmallow have melted slightly.

Question

Which statement correctly identifies a part of this process as a physical or a chemical change?

(1 point)
Responses

The digesting of the food is a physical change.
The digesting of the food is a physical change.

The toasting of the marshmallow is a chemical change.
The toasting of the marshmallow is a chemical change.

The burning of the wood for the campfire is a physical change.
The burning of the wood for the campfire is a physical change.

The melting of the chocolate is a chemical change.

Answer 1

The correct response is:

The toasting of the marshmallow is a chemical change.

Toasting a marshmallow involves the application of heat, resulting in chemical reactions that change the structure and flavor of the marshmallow, which is considered a chemical change. The melting of chocolate, on the other hand, is a physical change since it changes state from solid to liquid without altering its chemical composition.