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TRANSCRIPT
mmcl20031
11 22 33 44 55 66 77 88 99
1010 1111 1212 1313 1414 1515 1616 1717 1818
1919 2020 2121 2222 2323
mmcl20032
Write the formula for silver (I) chloride
AgCl
answer
1
mmcl20033
What is the valency of iron in iron (III) oxide?
3
answer
2
mmcl20034
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
mmcl20035
What is the chemical formula of hydrogen sulphide?
answer
H2S
4
mmcl20036
answer
CaO
What is the chemical formula of calcium oxide?5
mmcl20037
What is the valency of the Group 7 elements?
answer
1
6
mmcl20038
answer
What is the valency of the Group 2 elements?
2
7
mmcl20039
H2
answer
What is the chemical formula of hydrogen?
8
mmcl200310
CCl4
answer
What is the chemical formula of carbon tetrachloride?
9
mmcl200311
What is meant by the prefix:- Mono?
Mono = 1ie carbon monoxide molecules contain one oxygen atom (CO)
answer
10
mmcl200312
What is meant by the prefix:- Di?
Di = 2ie carbon dioxide molecules contain two oxygen atoms (CO2)
answer
11
mmcl200313
What is meant by the prefix:- Tri?
Tri = 3ie sulphur trioxide molecules contain three oxygen atoms (SO3)
answer
12
mmcl200314
What is meant by the prefix:- Tetra?
Tetra = 4ie carbon tetrachloride molecules contain four chlorine atoms (CCl4)
answer
13
mmcl200315
How many atoms of each element are present in a molecule of H2O?
H = 2 O = 1
answer
14
mmcl200316
answer
How many atoms of each element are present in a molecule of C6 H12O6?
C = 6 H = 12 O = 6
15
mmcl200317
Which elements have the most stable electron arrangement?
The Noble Gases
answer
16
mmcl200318
Name the compound with the formula N2O4
Dinitrogen tetroxide
(tetraoxide)
answer
17
mmcl200319
What type of elements do not normally form bonds with other elements?
The Noble Gases
answer
18
mmcl200320
What type of elements bond together to form covalent bonds?
Non Metals
answer
19
mmcl200321
What is a molecule?
A group of atoms joined together by covalent
bonds
answer
20
mmcl200322
Draw a diagram to show the SHAPE of a methane molecule (CH4)
answer
H
HH
HC
21
tetrahedral
mmcl200323
What is the formula for silver (I) dichromate?(You will need to use the Data Book)
answer
22
AgAg22CrCr22OO77
mmcl200324
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