Chemical vs Physical Change
Date: Around 1999
Is cooking hamburger and frozen french fries a
physical change ? I'm in 6th grade and i am not clear on physical
and chemical changes .
In terms of the 5 senses, sight, hearing, taste, smell, and feel --
A physical change can cause a change in the way things look, sound
(for example, when you drop it), or feel.
In addition to changing the way things look, sound, and feel, a
chemical change can cause a change in the way things taste or smell. DO
NOT taste non-food items to see if they have undergone a chemical
change! But you can, carefully, sniff things.
These "rules" are a little different than what your teacher has told
you but I hope that they might help you to understand what your teacher
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Update: June 2012