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VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Biology => Topic started by: jane1234 on February 23, 2011, 01:07:12 pm

Title: Why do we use the percentage change in mass??
Post by: jane1234 on February 23, 2011, 01:07:12 pm

Why do we use the percentage change in mass instead of just the change in mass??
This is relating to an osmosis prac by the way...

Title: Re: Why do we use the percentage change in mass??
Post by: Russ on February 23, 2011, 03:25:34 pm

Because if something weighs 1g and changes by 1g, that's really important. If it ways 1kg and changes by 1g, that's much less important.

As such, percentage mass is always used to show how big the change was, relative to the existing mass.