Worksheets6.17 Separating metals from their ores
Total questions: 23
Worksheet time: 12mins
How is gold separated from its mixture?
Evaporation
Distillation
Panning
Filtration
Panning works on a mixture of substances with different ................................
melting point
boiling point
densities
solubility
During panning of a mixture of sand and gold....................................................
gold escapes over the edge of the pan because its more denser than quartz.
gold falls to the bottom of the pan because its more denser than quartz..
gold escapes over the edge of the pan because its less denser than quartz.
gold falls to the bottom of the pan because its less denser than quartz..
What is the main reason why it is not easy to extract a metal from its ore?
(more than one answer)
Not enough ores
Lack of technology
Much energy is needed
Many stages involved
What is the main compound tin exists naturally as in tin ore?
Tin Chloride
Tin Oxide
Tin Sulfide
Tin Carbonate
Tin dioxide
Which country is the top producer of tin?
Australia
South America
Indonesia
China
How many grams of tin is extracted from 1 ton of riverbed ores that contain 0.015%.
150 kg
0.015 kg
0.15 kg
15 kg
How many grams of ore waste is produced from 1 kg of riverbed ores that contain 0.015%.
0.15 g
150 g
999.85 g
850 g
985 g
The top country in terms of producing tin.
China
Venezuela
Brazil
USA
UK
The second top country in terms of producing tin.
China
Venezuela
Brazil
USA
Indonesia
During tin extraction......................is used to separate tin oxide from big pieces of unwanted material.
magnetism
gravity
fractional distillation
filtration
In ...................................., most tin ore is in riverbeds,
China
Indonesia
South America
Australia
The filtration and gravity produce more than ........... tin by mass.
0.07%
0.7%
7%
70%
In China, South America, and Australia, most tin ore is found...........................................................
deep underground.
in riverbeds, mixed with sand and mud.
At what temperature is tin oxide placed in a furnace with carbon for extraction?
1000 °C
1200 °C
1400 °C
1600 °C
Placing the tin oxide in a furnace with carbon removes ......................from the tin oxide.
oxygen
hydrogen
nitrogen
iodine
What is the main method used to separate tin from impurities after burning the tin oxide?
Distillation
heating/melting
Filtration
Panning
What is the main reason why panning works to separate gold from sand?
Same size
Different densities
Same color
Same texture
What is the main element used to remove oxygen from tin oxide during extraction?
Hydrogen
Nitrogen
Carbon
Oxygen
What percentage of tin by mass is produced through filtration and gravity separation?
More than 80%
Around 70%
Around 60%
Less than 50%
What is the main reason why tin is separated from the mixture impurities after heating/melting?
Tin is lighter
Tin is denser
Tin evaporates
Tin melts first
Tin exists naturally as an element on its own.
True
False
If you have some tin ore with a tin content 0.015%
Calculate the mass of tin that can be extracted from 10 ton of ore
1500 kg
1500 g
15000 g
15000 kg
