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Name: Jennifer
Status: student
Age: 11
Location: N/A
Country: N/A
Date: Around 1999 


Question:
Is cooking hamburger and frozen french fries a chemical or physical change ? I'm in 6th grade and i am not clear on physical and chemical changes .

thanks


Replies:
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 means.

Dr. Bradburn



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