Which statement about a physical and chemical changes is true?
a) a change in color often occ...
Biology, 30.09.2019 18:00 officialrogerfp3gf2s
Which statement about a physical and chemical changes is true?
a) a change in color often occurs during a chemical change.
b) a change of state of matter always indicates a chemical change.
c) if no change in color is visible in a process, it must be a chemical change.
d) if no change of state of matter occurs in a process, it must be a physical change.
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