1. 1 pt(s). |
Which of these metals would be found pure in the earth’s crust | |
A. | iron | |
B. | silver | |
C. | aluminium | |
D. | magnesium |
2. 1 pt(s). |
According to the graph, which air pollutant decreased the most from 1970 to 1991?
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A. | Carbon monoxide | ||
B. | Sulfur oxides | ||
C. | Particulates | ||
D. | Lead |
3. 1 pt(s). |
What is the mass of the rock?
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A. | 335.6 g | ||
B. | 350.6 g | ||
C. | 354.6 g | ||
D. | 356.0 g |
4. 1 pt(s). |
To obtain a very reactive metal from its compounds requires…………. | |
A. | little energy | |
B. | a lot of energy | |
C. | not much heat | |
D. | an act of God |
5. 1 pt(s). |
To obtain an unreactive metal from its compounds requires…………. | |
A. | little energy | |
B. | a lot of energy | |
C. | much heat | |
D. | hope |
6. 1 pt(s). |
Limestone is added to the Blast Furnace to remove impurities. The impurities float on the surface of the molten iron and forms a material called …. | |
A. | scum | |
B. | slag | |
C. | litter | |
D. | concrete |
7. 1 pt(s). |
We can use the Blast Furnace to extract iron from iron ore but not aluminium from aluminium ore because …… | |
A. | iron is a less reactive metal and needs less energy to extract it from its ore | |
B. | iron is a more reactive metal and needs less energy to extract it from its ore | |
C. | iron is a less reactive metal and needs more energy to extract it from its ore | |
D. | iron is a more reactive metal and needs more energy to extract it from its ore |
8. 1 pt(s). |
The blast furnace cannot be used to extract aluminium from its ore because | |
A. | aluiminium is too unreactive a metal and needs the energy of electrolysis to extract it from its ore | |
B. | aluiminium is too reactive a metal and needs the energy of electrolysis to extract it from its ore | |
C. | aluiminium is too reactive a metal and only needs gentle heating to extract it from its ore | |
D. | aluiminium is an unreactive a metal and is found uncombined in the Earth’s crust |
9. 1 pt(s). |
Some metals are found uncombined, in their native form in the ground. These metals would be | |
A. | hard | |
B. | soft | |
C. | unreactive | |
D. | reactive |
10. 1 pt(s). |
What rocks are you most likely to find beside a volcano? | |
A. | igneous | |
B. | metamorphic | |
C. | sedimentary |
11. 1 pt(s). |
When heat and pressure are applied to a rock, what kind of rock is formed? | |
A. | sedimentary | |
B. | igneous | |
C. | metamorphic |
12. 1 pt(s). |
What is the difference between an ore and a mineral containing a metal element? | |
A. | an ore canotains only a small amount of the metal, but the mineral has enough to make it economic to extract the metal | |
B. | a mineral contains only a small amount of the metal, but the ore has enough to make it uneconomic to extract the metal | |
C. | a mineral contains only a small amount of the metal, but the ore has enough to make it economic to extract the metal | |
D. | an ore contains only a small amount of the metal, but the mineral has enough to make it uneconomic to extract the metal |
13. 1 pt(s). |
When copper chloride is electrolysed | |
A. | copper metal forms at the positive electrode and chlorine gas forms at the negative electrode | |
B. | chlorine gas forms at the positive electrode and chlorine gas forms at the negative electrode | |
C. | copper metal forms at the positive electrode and copper metal forms at the negative electrode | |
D. | chlorine gas forms at the positive electrode and copper metal forms at the negative electrode |
14. 1 pt(s). |
When assessing what a soil is made up of, a sample can be shaken and left to settle. The bottom layer that settles out will contain | |
A. | water | |
B. | sand | |
C. | clay | |
D. | silt | |
E. | humus |
15. 1 pt(s). |
Four metals, silver, zinc, iron and copper were added to solutions of each of their salts. When iron was added to copper, what would be observed | |
A. | the iron disappears | |
B. | the iron disappears and copper appears | |
C. | the iron bubbles releasing hydrogen gas | |
D. | no reaction would be seen |