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Calderglen High School
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Calderglen High School
Write the formula for silver (I) chloride
AgCl
answer
1
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What is the valency of iron in iron (III) oxide?
3
answer
2
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How is the valency of a transition metal shown in the names of its compounds?
Roman Numerals in brackets eg copper (II) chloride =
valency 2
answer
3
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What is the chemical formula of hydrogen sulphide?
answer
H2S
4
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answer
CaO
What is the chemical formula of calcium oxide?5
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What is the valency of the Group 7 elements?
answer
1
6
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answer
What is the valency of the Group 2 elements?
2
7
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H2
answer
What is the chemical formula of hydrogen?
8
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CCl4
answer
What is the chemical formula of carbon tetrachloride?
9
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What is meant by the prefix:- Mono?
Mono = 1ie carbon monoxide molecules contain one oxygen atom (CO)
answer
10
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What is meant by the prefix:- Di?
Di = 2ie carbon dioxide molecules contain two oxygen atoms (CO2)
answer
11
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What is meant by the prefix:- Tri?
Tri = 3ie sulphur trioxide molecules contain three oxygen atoms (SO3)
answer
12
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What is meant by the prefix:- Tetra?
Tetra = 4ie carbon tetrachloride molecules contain four chlorine atoms (CCl4)
answer
13
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How many atoms of each element are present in a molecule of H2O?
H = 2 O = 1
answer
14
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answer
How many atoms of each element are present in a molecule of C6 H12O6?
C = 6 H = 12 O = 6
15
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Which elements have the most stable electron arrangement?
The Noble Gases
answer
16
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Name the compound with the formula N2O4
Dinitrogen tetroxide
(tetraoxide)
answer
17
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What type of elements do not normally form bonds with other elements?
The Noble Gases
answer
18
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What type of elements bond together to form covalent bonds?
Non Metals
answer
19
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What is a molecule?
A group of atoms joined together by covalent
bonds
answer
20
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Draw a diagram to show the SHAPE of a methane molecule (CH4)
answer
H
HH
HC
21
tetrahedral
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What is the formula for copper(II) Nitrate?(You will need to use the Data Book)
answer
22
CuCu22(NO(NO33))11
Answer - Cu(NOAnswer - Cu(NO33))22
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An ionic compound has the formula X2O.In what Group of the Periodic Table could the element X be found?
answer
23
Group 1 because it’s Group 1 because it’s
valency is 1valency is 1
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What is the molecular formula for this molecule?
answer
24
CC22HH66OO
C C
H
H
H
H
H
H
O
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What is the correct formula for this molecule?
answer
25
CHClCHCl33C
Cl
Cl
Cl
H