Question

which of the following is a chemical change? creating a mixture of water, rocks, and dirt breaking a candle in two crumpling a piece of paper baking brownies

Explanation:

A chemical change involves a transformation that alters the chemical composition of a substance. Creating a mixture, breaking a candle, and crumpling paper are physical changes as they don't change the chemical makeup. Baking brownies involves chemical reactions (like the Maillard reaction, starch gelatinization, etc.) that change the chemical structure of the ingredients.

Answer:

Baking brownies