Question

How come you cannot use mass or volume alone to identify substances?

Answer 1

actually they both are separate identities and are related by a factor of DENSITY

which varies from substance to substance.They both are separate physical quantities.

Answer 2

Answer:

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• ➫ A pail may contain water that is 1kg in mass and 1L in volume. A drop of water may be 1g in mass and 1mL in volume. Both are water, but they have different mass and volumes. Therefore you can't identify whether a substance is water just by measuring its mass and volume.