Answer:
1. balance observation using "how much" = 5. quantitative instrument
2. graduated cylinder = 4. quantitaive instrument of volume
3. hypothesis proposed explanation= 7. qualitative descriptive observation
4. unit of volume= L
6. kg = primary unit of mass
Explanation:
there seem to be some typo error in uploading question but still it was clear to answer.
No, this item is not made of pure silver because if it has been made from pure silver that it would have displaced only 1.16cm³ of water but due to the addition of some other low-density element it displaces 1.9cm³ of water.
<u>For pure silver</u>
density of pure silver is = 10.49 g/cm³
mass of silver = 12.2 gram
since, density = mass/volume
volume = mass/density
= 12.2/10.49 cm³
= 1.16 cm³
But the actual displaced water is <u>1.9cm³</u>, which means some other element of lower density has been added.
Therefore, it is clear that the given jewelry is not made of pure silver.
Learn more about silver here:-brainly.com/question/17086277
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