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