Which of the following is an example of a chemical change?

Question

A.
The shell of an egg breaks when it is struck against a hard surface.
B.
Flour and sugar are sifted together into a measuring cup.
C.
A mixture of flour, sugar, eggs, and butter is baked to become a cake.
D.
Chocolate squares are melted to make cake icing.

Answer 1

The correct answer is: C. A mixture of flour, sugar, eggs, and butter is baked to become a cake.

This is an example of a chemical change because baking the mixture results in chemical reactions that transform the ingredients into a new substance (the cake), which has different properties than the original ingredients.