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Essential Chemistry for IGCSE - The Periodic Table (Section 1)

1
Which property of a halogen decreases going down the group?
Answer
(A)
Reactivity.
2
What is a common use of Argon?
Answer
(A)
In the extraction of titanium.
3
What is the formula of the compounds formed when halogens react with sodium?
Answer
(A)
NaX
4
What is the electronic structure of the noble gases?
Answer
(B)
They have a full outer shell of electrons.
5
Which of the following will be a property of a metallic compound?
Answer
A
B
C
6
Which of the following observations would you expect when a small piece of potassium is dropped into water?
Answer
(C)
The potassium will react vigorously, possibly igniting, producing hydrogen gas.
7
What is the nature of the force that holds noble gases together?
Answer
(C)
Van der Waals forces
8
Which of the following elements would you expect to have the greatest metallic character?
Answer
(C)
Potassium (K)
9
Which of the following is NOT a property of Group 1 metals (alkali metals)?
Answer
(D)
They are generally found as diatomic molecules.
10
What type of bond is formed between a halogen and sodium?
Answer
(C)
Ionic
11
Which Group in the periodic table consists of only unreactive elements?
Answer
(D)
Group 0
12
What is the trend in the reactivity of the halogens down Group 7?
Answer
(B)
Decreases.
13
Which of the following are the characteristic properties of the noble gases?
Answer
B
C
D
14
What is a general trend in the melting and boiling points of the Group I metals?
Answer
(B)
They decrease down the group.
15
How do you distinguish transition metals from Group 1 metals?
Answer
A
B
C
16
Which of the following noble gases is used in advertising signs?
Answer
(B)
Neon
17
Which of the following statements best describes the arrangement of elements in the periodic table?
Answer
(B)
Elements are arranged by increasing atomic number, with elements having similar properties in the same column.
18
What kind of bonds are in the elements from group 1?
Answer
(C)
Metallic
19
What is the process in which one halogen replaces another in a compound?
Answer
(C)
Displacement reaction
20
What type of chemical reaction does a displacement reaction belong to?
Answer
(C)
Redox
21
What property increases as you go down the group of noble gasses?
Answer
(A)
Boiling point
22
Why do the noble gases form few, if any, compounds?
Answer
(B)
Because they have full outer shells of electrons.
23
What is the relative reactivity of Group 1 and Group 7 elements?
Answer
(B)
Group 7 is more reactive than Group 1.
24
Which of the following properties are different for the same halogen in different states?
Answer
(C)
Colour.
25
What is the trend in the atomic radius of elements across a period?
Answer
(B)
Decreases.
26
What do all the elements in the same group of the periodic table have in common?
Answer
(C)
The same number of valence electrons.
27
Which of the following properties would you expect to increase as you go *down* Group 17 (halogens)?
Answer
(C)
Atomic radius
28
Which of the following statements best describes the relative reactivity of the halogens?
Answer
(B)
Reactivity decreases down the group.
29
Which of the following is a property of transition metals?
Answer
A
B
C
30
What is the relationship between the number of outer shell electrons and the group number in the periodic table?
Answer
(A)
The group number indicates the number of outer shell electrons.
31
What is the role of a catalyst?
Answer
(C)
To increase the rate of a reaction without being consumed.
32
Which of the following best describes the physical state of the halogens at room temperature?
Answer
(D)
Exist in all three states.
33
Which gas is used in light bulbs?
Answer
(B)
Argon
34
What happens to the melting and boiling points as you go down Group 7?
Answer
(A)
Increase
35
Which of the following properties typically *decrease* down Group VII (halogens)?
Answer
(B)
Reactivity with sodium.
36
Which of the following best explains why the noble gases are unreactive?
Answer
(B)
They have a full outer shell of electrons.
37
What is the trend of the reactivity of the group 1 elements?
Answer
(B)
Increases going down the group.
38
Which of the following properties is NOT typical of transition metals?
Answer
(D)
Low reactivity
39
What are the main properties of a good catalyst?
Answer
A
B
C
40
What is the general trend in electronegativity across a period?
Answer
(A)
Increases
41
Which of the following noble gases is used in lighting?
Answer
(B)
Neon
42
What are the transition metals used as, due to their ability to speed up reactions?
Answer
(C)
Catalysts
43
Which of the following are properties of the halogens?
Answer
A
C
44
What happens to the first ionization energy as you move down Group 1?
Answer
(B)
Decreases
45
What term is used to describe horizontal rows in the periodic table?
Answer
(B)
Periods
46
Which of the following statements best describes the general trend in electronegativity across a period?
Answer
(A)
Increases from left to right
47
What is the physical state of bromine at room temperature?
Answer
(B)
Liquid
48
What are the Group VII elements commonly referred to as?
Answer
(C)
Halogens
49
Which halogen will have the highest boiling point?
Answer
(D)
Iodine
50
What type of reaction occurs when lithium reacts with water?
Answer
(D)
Single Replacement