Assignment
Name:
Esis:
Total marks 15 Points
Lesson Objective: Investigate the reactivity of the halogens using displacement reactions
Complete the displacement reactions:
[5 points]
1. zinc + _Lead oxide_____ → zinc oxide + lead
2. _Aluminium_____ + copper nitrate → aluminium nitrate + __Copper____
3. Cl2 + KBr ⟶_KCl___ + _Br2__
4. Cl2 + KI ⟶_KCl___ + __I2__
5. I2 + KBr ⟶____ + ____no reaction
6) Which is the most reactive of these halogens?
a)
b)
c)
d)
F
I
Br
Cl
7) What is the correct explanation for the trend in reactivity as
you go down Group 7?
a)
b)
c)
d)
It is easier to gain an electron as the atom is bigger
It is easier to lose an electron as the atom is bigger
It is more difficult to lose an electron as the atom is bigger
It is more difficult to gain an electron as the atom is bigger
8) When Group 7 elements react do they?
a) Lose an electron
b) Neither gain nor lose an electron
c) Gain an electron
9) Why do all Group 7 elements have similar chemical properties?
a) They have the same number of neutrons
b) They have the same number of electrons
c) They have the same number of electrons in the outer shell
d) They have the same number of protons
10) Which is the most reactive halogen?
a)
b)
c)
d)
bromine
fluorine
iodine
chlorine
11) Which of the following is true?
a)
b)
c)
d)
A less reactive halogen will displace a more reactive halide
A more reactive halogen will displace a less reactive halide
A more reactive halide will displace a less reactive halogen
A less reactive halide will displace a more reactive halogen
12) In a displacement reaction, which of these is true?
a)
b)
c)
d)
Both halogens gain electrons
No electrons are transferred
The less reactive halogen is gaining electrons
The more reactive halogen is gaining electrons
13) In a displacement reaction, which of the following is true?
a)
b)
c)
d)
Both halogens are reduced
The less reactive halogen is being reduced
The more reactive halogen is being reduced
There is no reduction occurring
14] In a halogen displacement reaction between chlorine and bromine, which halogen is displaced?
a) Chlorine
b) Bromine
c) Both chlorine and bromine
d) None of the above
15] What is the product of the reaction between chlorine gas and potassium bromide solution?
a) Chlorine gas and potassium bromide
b) Potassium chloride and bromine
c) Chlorine gas and bromide ions
d) Potassium chloride and bromine gas