This Chemistry quiz is called 'Chemistry - Making Metal Supplies Go Further' and it has been written by teachers to help you if you are studying the subject at high school. Playing educational quizzes is a user-friendly way to learn if you are in the 9th or 10th grade - aged 14 to 16.
It costs only $12.50 per month to play this quiz and over 3,500 others that help you with your school work. You can subscribe on the page at Join Us
One of the topics covered in high school Science is building materials, such as metals or limestone. This quiz looks specifically at our metal supplies, and making them go further through recycling.
[readmore]
We obtain most of our resources from the Earth's crust and these resources are limited. It is therefore important that we conserve as much as possible because when they are gone, they are gone forever. So how can we make our supplies of these resources go further? One way to conserve our resources is to recycle waste products instead of sending them to landfill sites. Some forms of recycling happen naturally, for example the carbon cycle and nitrogen cycle which allow these two important elements to be recycled.
The Earth's population is increasing faster and faster and it's important that the way we behave now does not make life difficult or impossible for future generations. This is called sustainable development and it needs to take into account the need for economic development to improve people's standards of living, but also the environment and the resources it provides for us.
Recycling is an important way of making supplies go further and in helping us achieve sustainable development. We can recycle many resources, including metals. It takes less energy to melt and remold a metal than it does to extract new metals from their ores. Aluminum is a valuable metal that melts at a relatively low temperature, making it a particularly attractive resource for recycling. However, a lot of metals that we use are mixtures of metals (alloys) and that can make them difficult to recycle.
Recycling offers many benefits but there are drawbacks too. The metal has to be collected and transported to where it is to be processed so we need to consider which metals can be recycled economically.
[/readmore]
1.
|
Which of the following is not an environmental benefit of recycling metals? |
|
[ ] |
It requires less energy than extracting from an ore |
[ ] |
It reduces the amount of landfill |
[ ] |
It reduces the cost of the metal |
[ ] |
Less metal ore needs to be taken from the ground |
|
|
2.
|
Why is it cheaper to recycle metals than to extract them from their ore? |
|
[ ] |
It can be done closer to where the metals are thrown away |
[ ] |
Transporting scrap metal is cheaper than transporting the ore |
[ ] |
The people who do the recycling are paid less than people who extract metals from the ores |
[ ] |
There are far less processes involved in recycling than in extracting metal from an ore |
|
|
3.
|
When they reach the place they are to be recycled, how is recycling of metals carried out? |
|
[ ] |
Metals are added to their molten ore |
[ ] |
Metals are taken from pieces of waste recovered from spoil heaps |
[ ] |
Metals are reduced using carbon and molded into ingots |
[ ] |
Metals are melted down and reshaped |
|
|
4.
|
Why is extracting iron from its ore so expensive compared to recycling it? |
|
[ ] |
Iron ore has to be mined |
[ ] |
The iron ore needs to be purified |
[ ] |
Extraction requires chemical reactions to be carried out |
[ ] |
All of the above |
|
|
5.
|
Apart from the costs associated with preparing the ore, which of the following is likely to make extracting aluminum expensive? |
|
[ ] |
The cost of the staff needed to work in the factory |
[ ] |
The cost of the electricity used during the electrolysis of the aluminum ore |
[ ] |
The cost of the carbon required to displace the aluminum from its ore |
[ ] |
The cost of casting the aluminum into ingots |
|
|
6.
|
Why is aluminum easy to recycle? |
|
[ ] |
It is a shiny metal |
[ ] |
It is a soft metal |
[ ] |
It is mainly made into drinks cans |
[ ] |
It has a relatively low melting point for a metal |
|
|
7.
|
Titanium is also an expensive metal. Only a small portion is ever recycled. Which of the following reasons is the most likely explanation? |
|
[ ] |
It is usually used in small quantities to make alloys rather than using it on its own |
[ ] |
It is only used to make small items and it is not worth it |
[ ] |
It is a heavy metal and the cost of transporting it for recycling is too expensive |
[ ] |
All of the above |
|
|
8.
|
Which of the following environmental issues could recycling metals reduce? |
|
[ ] |
Air pollution in cities |
[ ] |
Low level atmospheric ozone |
[ ] |
Pollution of land and rivers |
[ ] |
Cutting down of forests |
|
|
9.
|
Read the following information and then decide which of the four answers contains the missing words in the correct order.
Before any metals can be ________ the scrap metal has to be collected, ____________ and sorted, which all cost money. The main problem with recycling metals is ____________ the useful metal from the rest of the rubbish. In domestic recycling plants iron and steel objects can be picked out using an __________ as most other materials are non-magnetic. |
|
[ ] |
transported, recycled, electromagnetism, separated |
[ ] |
taken, melted, removing, electromagnet |
[ ] |
recycled, transported, separating, electromagnet |
[ ] |
recycled, stored, picking, brush |
|
|
10.
|
Why is the recycling of copper becoming more and more important? |
|
[ ] |
The world's reserves of high grade copper ores are very limited and could be exhausted within a few human generations |
[ ] |
Many copper manufacturers have gone out of business so not much is being made |
[ ] |
It is a precious metal |
[ ] |
New laws have made copper ore mining much more difficult |
|
|
1.
|
Which of the following is not an environmental benefit of recycling metals? |
|
[ ] |
It requires less energy than extracting from an ore |
[ ] |
It reduces the amount of landfill |
[x] |
It reduces the cost of the metal |
[ ] |
Less metal ore needs to be taken from the ground |
|
|
2.
|
Why is it cheaper to recycle metals than to extract them from their ore? |
|
[ ] |
It can be done closer to where the metals are thrown away |
[ ] |
Transporting scrap metal is cheaper than transporting the ore |
[ ] |
The people who do the recycling are paid less than people who extract metals from the ores |
[x] |
There are far less processes involved in recycling than in extracting metal from an ore |
|
|
3.
|
When they reach the place they are to be recycled, how is recycling of metals carried out? |
|
[ ] |
Metals are added to their molten ore |
[ ] |
Metals are taken from pieces of waste recovered from spoil heaps |
[ ] |
Metals are reduced using carbon and molded into ingots |
[x] |
Metals are melted down and reshaped |
|
|
4.
|
Why is extracting iron from its ore so expensive compared to recycling it? |
|
[ ] |
Iron ore has to be mined |
[ ] |
The iron ore needs to be purified |
[ ] |
Extraction requires chemical reactions to be carried out |
[x] |
All of the above |
|
|
5.
|
Apart from the costs associated with preparing the ore, which of the following is likely to make extracting aluminum expensive? |
|
[ ] |
The cost of the staff needed to work in the factory |
[x] |
The cost of the electricity used during the electrolysis of the aluminum ore |
[ ] |
The cost of the carbon required to displace the aluminum from its ore |
[ ] |
The cost of casting the aluminum into ingots |
|
|
6.
|
Why is aluminum easy to recycle? |
|
[ ] |
It is a shiny metal |
[ ] |
It is a soft metal |
[ ] |
It is mainly made into drinks cans |
[x] |
It has a relatively low melting point for a metal |
|
|
7.
|
Titanium is also an expensive metal. Only a small portion is ever recycled. Which of the following reasons is the most likely explanation? |
|
[x] |
It is usually used in small quantities to make alloys rather than using it on its own |
[ ] |
It is only used to make small items and it is not worth it |
[ ] |
It is a heavy metal and the cost of transporting it for recycling is too expensive |
[ ] |
All of the above |
|
|
8.
|
Which of the following environmental issues could recycling metals reduce? |
|
[ ] |
Air pollution in cities |
[ ] |
Low level atmospheric ozone |
[x] |
Pollution of land and rivers |
[ ] |
Cutting down of forests |
|
|
9.
|
Read the following information and then decide which of the four answers contains the missing words in the correct order.
Before any metals can be ________ the scrap metal has to be collected, ____________ and sorted, which all cost money. The main problem with recycling metals is ____________ the useful metal from the rest of the rubbish. In domestic recycling plants iron and steel objects can be picked out using an __________ as most other materials are non-magnetic. |
|
[ ] |
transported, recycled, electromagnetism, separated |
[ ] |
taken, melted, removing, electromagnet |
[x] |
recycled, transported, separating, electromagnet |
[ ] |
recycled, stored, picking, brush |
|
|
10.
|
Why is the recycling of copper becoming more and more important? |
|
[x] |
The world's reserves of high grade copper ores are very limited and could be exhausted within a few human generations |
[ ] |
Many copper manufacturers have gone out of business so not much is being made |
[ ] |
It is a precious metal |
[ ] |
New laws have made copper ore mining much more difficult |
|
|