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Which would be the best tools to measure the density of a small piece of silver ore?
Wiki User
∙ 13y ago
Since the silver ore is an irregular shape you will have to measure its volume by its displacement of water. The meaning of small is subjective.
1) If small means the size of your thumbnail or less then
- get the mass of piece of ore as accurately as you can
- fill a 50.0 mL measuring cylinder to exactly 20.0 mL (read the bottom of the meniscus when reading the volume of water in glass ware)
- drop in the silver ore and carefully read the new volume
- subtract the two volumes to get the volume of the silver ore
- calculate density using Density = mass/volume.
2) If the ore piece is too big to fit into the measuring cylinder then
- get a plastic drink bottle and remove the top portion of the bottle with a sharp knife
- pierce a hole about half the size of your little finger nail in the bottle about half way up the bottle
- put the bottle on a flat surface and fill with water; this means the bottle will be absolutely filled up to the hole
- you now need to measure the water displaced by putting the ore into the bottle (excess water will run out of the hole). You can put the bottle in a dish and collect the water to be poured into a measuring cylinder or over a funnel to directly collect the water into the empty measuring cylinder
- record the volume of water collected
If you use g/cm3 you can compare the density of your ore with known density of silver (from the internet) to see how pure the ore is.
If you do not have a measuring cylinder then use the best equipment you have. Never use a beaker as they can have up to a 20% error. Method 2 can be used with any size container for any size object.
Wiki User
∙ 13y ago
Wiki User
∙ 13y agoA graduated cylinder and a balance
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