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WorksheetsCHEM E + F
Total questions: 20
Worksheet time: 12mins
Name
Class
Date
1.
What gas is always produced when a metal reacts with water?
a)
Oxygen
b)
Carbon Dioxide
c)
Hydrogen
d)
Carbon Monoxide
2.
What else is produced when a metal reacts with water? (HINT: Water has the formula H2O)
a)
Metal Oxide
b)
Metal Carbonate
c)
Metal Hydride
d)
Metal Hydroxide
3.
As well as a gas, there is another product made when an acid reacts with a metal. What is the name for this?
a)
Salt
b)
Water
c)
Alkali
d)
Carbon
4.
When a metal salt reacts with a more reactive salt, what sort of reaction occurs?
a)
Displacement
b)
Neutralisation
c)
Combustion
d)
No Reaction
5.
When magnesium reacts with copper sulphate, there are two products. What are they?
a)
Magnesium and Copper
b)
Magnesium Sulphate and Copper
c)
Magnesium Sulphate and Copper Sulphate
d)
Magnesium and Copper Sulphate
6.
When copper and magnesium sulphate are mixed together, there is no reaction. Why?
a)
Magnesium is more reactive than copper
b)
Copper is more reactive than magnesium
c)
Copper never reacts with metal salts
d)
Magnesium Sulphate never reacts with metals
7.
In order to make use of the many useful properties of metals, we need to extract them so that they are in their pure form. A common way of extracting many of the less reactive metals is to heat their minerals with what?
a)
Carbon
b)
Helium
c)
Oxygen
d)
Silicon
8.
What is the correct equation when potassium reacts with water?
a)
2K (s) + H2O (l) --> KOH (aq) + H2 (g)
b)
K (s) + 2H2O (l) --> KOH (aq) + 2H2 (g)
c)
2K (s) + 2H2O (l) --> 2KOH (aq) + H2 (g)
d)
K (s) + H2O (l) --> KOH (aq) + H2 (g)
9.
Which of the following is arranged according increasing reactivity?
a)
Mg > Li > Na > K
b)
Mg > Na > Li > K
c)
Na > Li > Mg > K
d)
K > Mg > Na > Li
10.
Which of the following does not react with water?
a)
lithium
b)
magnesium
c)
lead
d)
calcium
11.
Which statement correctly describes the 2 electrodes?
a)
The anode is negative and the cathode is positive
b)
The anode and cathode are both positive
c)
The anode is positive and the cathode is negative
d)
The anode and cathode are both negative.
12.
What is the name given to the solution that is being electrolysed?
a)
Salt solution
b)
Electric solution
c)
Mineral solution
d)
Electrolyte
13.
It is essetial that the electrolyte is a liquid so that...
a)
Charged ions can migrate towards the electrodes.
b)
Charged ions can migrate towards the electrodes.
c)
The solution can move around.
d)
The current can flow through it.
14.
What happens at the positive electrode?
a)
Positive non-metal ions are attracted
b)
Positive metal ions are attracted
c)
Negative non-metal ions are attracted
d)
Negative metal ions are attracted
15.
Positive ions (cations) will move towards the cathode (-) where they will discharge by....
a)
Breaking apart
b)
Losing electrons
c)
Clumping together.
d)
Gaining electrons
16.
What does the Cathode (-) do to ions?
a)
Give electrons to the Positive ions to turn them back into atoms
b)
Take electrons from the positive ions?
c)
Turn ions back into atoms by removing electrons
d)
Turn atoms into ions by adding electrons
17.
What is the equation to show what happens to Cl ions at the anode.
a)
Cl- --> Cl + e-
b)
2Cl- --> Cl2 + 2e-
c)
Cl2 + 2e- 2Cl-
d)
Cl2 + 2e- --> 2Cl-
18.
What is the product formed at the cathode during the electrolysis of molten magnesium fluoride?
a)
magnesium
b)
hydrogen
c)
fluorine
d)
oxygen
19.
What is the gas produced at the anode during the electrolysis of dilute hydrochloric acid?
a)
water
b)
oxygen
c)
hydrogen
d)
chlorine
20.
What type of charge does a metal ion have?
a)
+
b)
-
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