The students in Ms. Ramirez's science class are classifying different types of reactions. They have divided the reactions into two columns, as shown below. Use the table to answer the questions that follow. Column A Column B
Baking cupcakes Dissolving salt in water
Burning a log Boiling water
Frying an egg Freezing juice
Iron rusting Sawing a board in half
Why are the reactions listed in Column A classified as chemical reactions?
A.
The changes do not affect the materials' characteristics.
B.
The changes to the materials can be easily reversed.
C.
They changed the properties of the materials.
D.
They changed the shape of the materials.