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IGCSE Chem Chapter 3 Review Flashcards | StudBud
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IGCSE Chem Chapter 3 Review
IGCSE Chem Chapter 3 Review
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1
Elements in the same Group, have the same number of outer electrons.
False
True
2
The name for CO is:
carbon dioxide.
carbon monoxide.
carbon oxygen.
3
Balancing a covalent compound formulae is based on valency.
True
False
4
Mild steel contains:
copper and zinc.
copper and tin.
iron, chromium and nickel.
iron and carbon.
5
The elements between Group II and Group III are:
alkali earth metals.
alkali metals.
transition elements.
semi-metals.
6
In the Periodic Table:
elements are arranged in order of increasing proton number.
vertical columns are called groups.
horizontal rows are called periods.
all are correct.
7
Ionic bonds are also called:
covalent lattices.
crystalline structures.
electrovalent bonds.
8
As you move from left to right in the Periodic Table, elements get smaller and less metalic.
False
True
9
Non-metallic elements are held together by:
covalent bonding.
ionic bonding.
metallic bonding.
10
As you move from top to bottom of the Periodic Table, non-metallic elements become more reactive.
True
False
11
As you move from top to bottom on the Periodic Table, metallic elements get more reactive.
True
False
12
The most reactive non-metals are the Group VII halogens.
False
True
13
The formula for sodium (Na
1+
) carbonate (CO
2-
) is:
Na3CO2
Na2CO3
NaCO
14
The Periodic Table does not list metals like steel because it is:
doesn't fit
an alloy
too small
15
There will be a Periodic Table at the back of the IGCSE exam.
True
False
16
How many groups are there on the Periodic Table?
8
10
6
7
17
The halogens need how many electrons to fill their outer shell?
2
1
3
4
18
How would you test an element to see if it is a metal?
electrical conductivity
burn it
smash it
melt it
19
Metallic bonding creates a:
covalent structure.
ionic lattice.
sea of electrons.
20
Dot and cross diagrams are used to represent covalent bonds.
True
False
21
Reactivity in the Periodic Table:
increases from left to right.
decreases from left to right.
22
The alkali metals are in group:
VIII
I
III
V
23
The transition metals:
have high melting and boiling points.
all are correct.
have a high density.
are very hard and strong.
24
How many naturally occurring elements are there?
94
112
96
118
25
NH
4
+
is:
ionic compound.
a mixture.
an element.
26
The noble gases are found as individual elements in nature.
True
False
27
The number of positive charges on a metal ion is equal to the number of electrons lost.
True
False
28
All the halogens are poisonous.
False
True
29
Metals are usually solid.
False
True
30
Elements such as O
2
and H
2
are called diatomic elements. (and N
2,
F
2
, I
2
, Cl
2
, Br
2
)
False
True
31
The main distinction in the table is between metals and non-metals.
True
False
32
The formula for calcium (Ca
2+
) oxide (O
2-)
is:
CaO2
Ca2O
CaO
33
Table salt is an example of a giant ionic structure.
False
True
34
Graphite conducts electricity.
False
True
35
In ionic bonding:
there is a sea of electrons.
electrons are shared.
electrons are lost or gained.
36
The overall charge between elements in an ionic bond:
must be positive.
must equal zero.
must be negative.
37
All the elements in Group II have:
2 outer electrons.
2 shells.
2 isotopes.
2 alloys.
38
Bronze contains:
copper and tin.
copper and zinc.
iron and carbon.
tin and lead.
39
Diamond conducts electricity.
True
False
40
The noble gases are in group:
VIII
III
I
V
41
The alkali metals in Group I are soft metals that are very reactive.
True
False
42
Covalent bonding involves:
gaining an electron.
losing an electron.
sharing electrons.
43
In ionic bonding, which element looses an electron to have a positive charge?
Non-metal element.
Metal element.
44
A non-metal is an element that does not conduct electricity well.
False
True
45
SO
3
is called:
sulfur dioxide.
sulfur oxide.
sulfur trioxide.
46
Which of the following is not a property of metals:
malleable
brittle
conducts electricity
ductile
47
The covalent compound C
2
O
4
can be reduced to:
CO2
CO
48
Brass contains:
tin and lead.
iron and carbon.
copper and tin.
copper and zinc.
49
How many rows are on the Periodic Table?
10
8
6
7
50
I know more about chemistry now than I did at the beginning of the term.
True
False
51
Brass, bronze and stainless steel are all examples of:
mono atomic structures.
covalent compounds.
polyatomic ions.
alloys.
52
All the elements in Period II have:
2 electrons.
2 isotopes
2 alloys.
2 electron shells.
