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Chemistry 19 Online
OpenStudy (anonymous):

The scientific law of conservation of mass states that the total amount of mass in an isolated system remains constant. This means that the atoms present before a reaction are still present at the end of a reaction, they are just rearranged to form new molecules and compounds. This is a scientific law because it is based on mathematics instead of on experimentation. was a theory that was verified by enough scientists to become a law. was proven by the scientific community and can no longer be changed. describes what happens without attempting to explain why.

OpenStudy (anonymous):

it is not based on mathematics but on observation it has been verified but not proven it is ASSUMED to be true

OpenStudy (anonymous):

theory is an explanation of why, law is what happens

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