25
QuizMultiple Choice

Unit Test — Unit test

Question 25 • 2025-2026_MDCPS_2003345_Chemistry_1_A-CR

Burning a piece of wood in fire can be best described as a

Answer
A
chemical change because the atoms in wood change their state.
B
physical change because the atoms in wood are turned into a gaseous product.
C
chemical change because the atoms in wood and oxygen are rearranged.
D
physical change because the atoms in wood are turned into black ash.

Explanation

Burning wood is a chemical change because wood reacts with oxygen and forms new substances, such as gases and ash. The atoms are rearranged into different combinations; they do not simply change state or turn into ash through a physical change. Therefore, the best choice is “chemical change because the atoms in wood and oxygen are rearranged.”

AI-written and checked against the verified answer.