What happens to the mass of a substance during a physical change?
Understand the Problem
The question is asking about the behavior of mass during a physical change, specifically whether the mass of a substance changes or remains constant. The user seems to be testing knowledge about the principle of conservation of mass in physical processes.
Answer
The mass remains the same during a physical change.
The mass of a substance remains the same during a physical change.
Answer for screen readers
The mass of a substance remains the same during a physical change.
More Information
During a physical change, the particles within a substance might rearrange, but the total mass, the number of atoms, and the number of molecules all remain constant. This illustrates the Law of Conservation of Mass.
Tips
A common mistake is to assume that mass will change if the substance changes form (like ice melting to water), but the conservation of mass ensures it remains constant.
Sources
- The mass of the substance remains same during the physical change - BYJU'S - byjus.com
- The Conservation of Matter During Physical and Chemical Changes - National Geographic - education.nationalgeographic.org
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