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Noluvpablo:
What happens to the mass of substances during a physical change?
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cpl106:
During a physical change, the arrangement of particles may change but the mass, number of atoms and number of molecules will stay the same. ... During a chemical change, the mass and number of atoms is conserved, but the number of molecules is not always the same.
Noluvpablo:
thx
cpl106:
mh
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