Which one is the best way to determine wheter an uknown sample is a substance or a mixture?
A. Knowing it's density
B. Testing the given sample
C. Observing it's physical appearance
D Testing it's meltingand boiling point
A. Knowing it's density
B. Testing the given sample
C. Observing it's physical appearance
D Testing it's meltingand boiling point
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Answer:
C
Explanation:
but im not sure
hope ir help
brainlest me pls