Wed July 25, 2012 By:

how does mass of a substance alter in a physical change ?

Expert Reply
Thu July 26, 2012

A physical change can affect the size, shape or color of a substance but does not affect its composition or mass. The substances may be changed to another phase (i.e. gas, liquid, solid) or separated or combined.


when ice melts
when sulfur is mixed with iron filings. 
breaking a glass 
dissolving sugar in water

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