Can new matter be formed?
Isabella Bartlett
Updated on January 13, 2026
The mass of matter is always the same before and after the changes occur. The law of conservation of mass states that matter cannot be created or destroyed.
law of conservation of mass
According to the law of conservation of matter, matter is neither created nor destroyed, so we must have the same number and kind of atoms after the chemical change as were present before the chemical change.
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