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Mass has to do with the amount of substance, along with the actual material property (like density).


Suppose you have a sheet of paper and sheet of aluminum foil, which appear to be the same size (area). The aluminum is much denser than paper, but depending on the thickness you could have it where they both have the same mass. What you need is an identical volume of the substances, then compare the mass of those and from that calculate density, which is a property of the substance.

I hope this example helps.


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8y ago
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4mo ago

Mass and weight are not suitable for identifying a substance because they can vary depending on the location and gravitational force, while the identity of a substance remains constant regardless of its location. Identifying a substance requires specific physical and chemical properties unique to that substance, such as density, melting point, boiling point, and chemical composition.

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Q: Why can mass or weight not be used to identifiy a substance?
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Definition of equivalent mass?

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