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

Asked by 25th July 2012, 7:19 PM
Answered by Expert
Answer:

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.

Examples:

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

Answered by Expert 26th July 2012, 7:37 PM
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