1. Calderglen High School
Bonding - Formulae 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
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2. Write the formula for silver (I) chloride1
Write the formula for silver (I) chloride
answer
AgCl
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3. What is the valency of iron in iron (III) oxide?2
answer 3
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4. Roman Numerals in brackets eg copper (II) chloride = valency 2
How is the valency of a transition metal shown in the names of its compounds? 3
answer
Roman Numerals in brackets eg copper (II) chloride = valency 2
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5. What is the chemical formula of hydrogen sulphide?4
answer
H2S
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6. What is the chemical formula of calcium oxide?5
answer
CaO
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7. What is the valency of the Group 7 elements?6
answer 1
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8. What is the valency of the Group 2 elements?7
answer 2
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9. What is the chemical formula of hydrogen?8
answer H2
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10. What is the chemical formula of carbon tetrachloride?9
answer
CCl4
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11. What is meant by the prefix:- Mono?10
answer
Mono = 1
ie carbon monoxide molecules contain one oxygen atom (CO)
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12. What is meant by the prefix:- Di?11
answer
Di = 2
ie carbon dioxide molecules contain two oxygen atoms (CO2)
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13. What is meant by the prefix:- Tri?12
answer
Tri = 3
ie sulphur trioxide molecules contain three oxygen atoms (SO3)
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14. What is meant by the prefix:- Tetra?13
answer
Tetra = 4
ie carbon tetrachloride molecules contain four chlorine atoms (CCl4)
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15. How many atoms of each element are present in a molecule of H2O?14
answer
H = 2
O = 1
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16. How many atoms of each element are present in a molecule of C6 H12O6?15
answer
C = 6
H = 12
O = 6
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17. Which elements have the most stable electron arrangement?16
Which elements have the most stable electron arrangement?
answer
The Noble Gases
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18. Name the compound with the formula N2O417
answer
Dinitrogen tetroxide
(tetraoxide)
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19. What type of elements do not normally form bonds with other elements?18
What type of elements do not normally form bonds with other elements?
answer
The Noble Gases
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20. What type of elements bond together to form covalent bonds?19
What type of elements bond together to form covalent bonds?
answer
Non Metals
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21. A group of atoms joined together by covalent bonds
What is a molecule? 20
answer
A group of atoms joined together by covalent bonds
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22. Calderglen High School21
What is the formula for copper(II) Nitrate? (You will need to use the Data Book)
answer
Cu2(NO3)1
Answer - Cu(NO3)2
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23. Calderglen High School
An ionic compound has the formula X2O.In what Group of the Periodic Table could the element X be found? 22
answer
Group 1 because it’s valency is 1
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24. What is the molecular formula for this molecule?23
answer
C2H6O H H H C C O H H H
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25. What is the correct formula for this molecule?24
answer H
CHCl3 C Cl Cl Cl
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