Final answer:
A change that produces one or more new substances is known as a chemical change, not a physical change, making the statement false.
Step-by-step explanation:
Physical Changes versus Chemical Changes
A change that produces one or more new substances is called a chemical change, not a physical change. Therefore, the correct answer to the student's question is: 2) False. A physical change will alter the appearance of a substance but not its chemical identity or composition. Such changes might include melting, freezing, cutting, or any change of state or shape. On the other hand, a chemical change results in the formation of new substances, and it often involves observable phenomena such as energy changes, color changes, the formation of a precipitate, or the production of gas.
Examples of Physical and Chemical Changes
Melting candle wax is a physical change.
Combining sodium chloride (NaCl) with silver nitrate (AgNO3) to form silver chloride (AgCl) is a chemical change.