We can characterize properties of a substance to identify it because it helps us determine how the substance should be used. We can identify a substance by using physical or chemical properties. These help us by telling us which chemical we are looking at.
I hope this helps.. I wasn't sure what kind of answer you were looking for.
They speed up reactions by lowering activation energy. Many enzymes change shape when substrates bind.
Displacement is the distance and direction of an object's change in position from the starting.
Hence option B is correct.
Hope this helps!
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