What would be the salt produced in the reaction of iron and hydrochloric acid?
50%
Iron hydrochloride
50%
Iron chloride
0%
Chloro iron
0%
Iron chlorate
Q.2.
Which of the following combinations of chemicals is likely to be the most exothermic (gives out the most energy) when mixed together?
0%
Iron and aluminum oxide
50%
Magnesium and aluminum oxide
0%
Zinc and copper sulfate solution
50%
Magnesium and silver nitrate solution
Q.3.
Which of the following reactions does not produce hydrogen gas?
0%
Silver and citric acid
0%
Zinc and hydrochloric acid
0%
Magnesium and nitric acid
100%
Iron filings and sulfuric acid
Q.4.
Why are ionic compounds formed when a metal reacts with a non-metal?
100%
One or more electrons are transferred from the metal to the non-metal
0%
One or more electrons are transferred from the non-metal to the metal
0%
All of the electrons are transferred from the metal to the non-metal
0%
They share a pair of electrons
Q.5.
Which of the following metals is displaced from its ore by using carbon?
0%
Iron
0%
Sodium
0%
Gold
100%
Magnesium
Q.6.
What would you see if you added lithium to water?
0%
An explosion
0%
The metal fizzes and burns with a purple flame
100%
The metal fizzes, forms a molten ball and moves around the surface of the water
0%
The metal fizzes and moves around but doesn't melt
Q.7.
One way of producing copper would be to add which of the following metals to copper sulfate solution?
100%
Platinum
0%
Gold
0%
Carbon
0%
Iron
Q.8.
Which of the following would be produced when lithium carbonate reacts with nitric acid?
0%
Hydrogen
0%
Water
50%
Lithium nitrate
50%
Carbon dioxide
Q.9.
What would you see if you added potassium to water?
0%
An explosion
0%
The metal fizzes and burns with a purple flame.
0%
The metal fizzes, forms a molten ball and moves around the surface of the water
100%
The metal fizzes and moves around but doesn't melt
Q.10.
If you drop a piece of cleaned magnesium ribbon into a solution of silver nitrate, the magnesium becomes coated with a gray substance. What is the explanation for this?
100%
Magnesium is more reactive than silver and displaces the silver
0%
Magnesium is less reactive than silver and displaces the silver
0%
The magnesium reacts with the nitrate and is coated in magnesium nitrate
0%
Silver in silver nitrate is actually more reactive than magnesuim ribbon so the magnesium corrodes
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