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- 1. Multiple Choice
What is the electronic configuration for this atom?
2.7.2
2.8.1
2.8.2
2.8.3
- 2. Multiple Choice
What are the advantages of phytoextraction? (more than one answer)
No harmful gases are produced
causes less damage to the landscape than mining
very slow
can extract metals from contaminated soils
- 3. Multiple Choice
During electrolysis of molten sodium chloride what products would you expect at the anode and cathode?
Sodium metal and chlorine gas
Hydrogen gas and chlorine gas
Sodium metal and hydrogen gas
Hydrogen gas and oxygen gas
- 4. Multiple Choice
What is the main advantage of using electrolysis to extract metals?
It requires a lot of energy
The metal will be more pure than other methods
The cost of extracting metals with this metal is low
It doesn't require a lot of energy
- 5. Multiple Choice
Why does an ionic solid NOT conduct electricity
Because the atoms cant move
Because the ions cant move
Because the electrons cant move
Because electricity cannot travel through any solids
- 6. Multiple Choice
What does the symbol mean?
It is a redox reaction
It is a reversible reaction
It is a displacement reaction
It is a reaction where nothing will happen
- 7. Multiple Choice
What does the group number on the periodic table tell you?
The number of electrons
The number of protons in the nucleus
The number of electron shells
The number of electrons in the outer shell
- 8. Multiple Choice
What does the period number on the periodic table tell you?
The number of electrons in the outer shell
The number of electrons
The number of electron shells
The number of neutrons in the nucleus
- 9. Multiple Choice
What is an isotope? (choose two)
The same element that has a different mass number
The same element that has a different atomic number
The same element with a different number of electrons
The same element with a different number of neutrons
- 10. Multiple Choice
What could you use to measure the pH of a solution?
pH meter
Universal indicator
Acidometer
Water
- 11. Multiple Choice
An acid forms which sort of ion?
H+
OH-
H-
OH+
- 12. Multiple Choice
Which of the following are insoluble in water
Most chlorides
Most sulfates
Most carbonates
All nitrates
- 13. Multiple Choice
The Haber process is a reversible reaction that is exothermic in the forwards direction. What will happen to the yield if the temperature is increased?
Increase
Decrease
Stay the same
- 14. Multiple Choice
What colour do copper solutions form?
Pink
Orange
Blue
Red
- 15. Multiple Choice
How do you calculate the number of moles of a substance?
Mr/Mass
Mass/Mr
Concentration/Mr
Mass/concentration
- 16. Multiple Choice
The pH scale is a logarithmic scale, how many times more concentrated is an acid with a pH of 1 compared to one with a pH of 4?
x10
x4
x40
x1000
- 17. Multiple Choice
What is reduction?
The loss of oxygen
The gain of oxygen
The loss of electrons
The gain of electrons
- 18. Multiple Choice
What is oxidation?
The gain of oxygen
The loss of oxygen
The loss of electrons
The gain of electrons
- 19. Multiple Choice
What happens in a redox reaction
Only reduction
Only oxidation
Reduction and oxidation
Neither
- 20. Multiple Choice
When doing electrolysis on acidified water. What is the ratio of the volume of hydrogen to oxygen produced?
1:1
2:1
1:2
2:2
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