CHEMICAL BONDING WORKSHEET
A. Answer the following questions.
1. Draw the Lewis structure of each of the following atoms and determine the bonding
capacity of each one?
a) 6C
b) 7N
c)
8O
d) 9F
e)
10Ne
f)
15P
g)
16S
2. Element Y has second valence shell, and it can form a stable compound with
element 11X. If the formula of the compound is X2Y, what is the atomic number of Y.
3. An element X with an atomic number of 17 and element Y with an atomic number
of 20 forms a compound. What is the formula of this compound.
4. Write the Lewis structures of the following molecules.(1H, 6C, 7N, 9F, 17Cl)
a) C2Cl2
b) N2H4
c) HF
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5. Draw the Lewis structures of the following molecules and answer the related
questions. (1H, 6C, 7N, 8O, 9F, 17Cl)
h)
NH3
ii) CO2
iii) OF2
iv) Cl2
a) Determine the molecule which has non-polar covalent bonds.
b) Determine the molecule which has two double covalent bonds.
c) How many lone pairs of electrons does each molecule have?
6. Determine whether the bonds in the following substances are ionic, polar covalent
or non-polar covalent? (1H, 6C, 8O 12Mg, 16S, 17Cl,19K)
a) H2S
b) KCl
c) MgO
d) H2O
e) O2
f) CO
7. Predict the type of bond that the following elements will most likely make with
oxygen element. (8O)
a) 6X
b) 9Y
c)
19Z
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8. Draw the Lewis structure which is valid for a compound formed by 12X and 16Y.
9. Draw the structural formula of a stable molecule formed by 7X and 17Y.
10. What is the molecular formula of a stable compound formed by 15X and 1H?
11. What is the number of single covalent bonds and double covalent bonds in a
C2H4 molecule respectively? (1H, 6C)
12. How many hydrogen atoms are needed to complete the following structure? (6C)
C≡C-C=C
B. Circle the correct answer for the following questions.
1. Which statement is correct about two elements whose atoms form a covalent
bond with each other?
A.
The elements are metals.
B.
The elements are non-metals.
C.
The elements have very low abilities to attract electrons.
D.
The elements have very different abilities to attract electrons.
2.Which statement is a correct description of electron loss in this reaction?
2Al + 3S
Al2S3
A.
Each aluminium atom loses two electrons.
B.
Each aluminium atom loses three electrons.
C.
Each sulfur atom loses two electrons.
D.
Each sulfur atom loses three electrons.
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3.What is the formula for an ionic compound formed between an element, X,
from group 2-A and an element, Y, from group 6-A?
A.
XY
B.
X2Y
C.
XY2
D.
X2Y6
4. Which statement is true for compounds containing only covalent bonds?
A.
They are held together by electrostatic forces of attraction between
oppositely charged ions.
B.
They are made up of metal elements only.
C.
They are made up of a metal from the far left of the periodic table
and a non-metal from the far right of the periodic table.
D.
They are made up of non-metal elements only.
5. Which one of the following compounds consist of molecules?
A.NaCl
B. BF3
C. CaCl2
D. FeS.
6. What is the formula for the compound formed by calcium(20Ca) and nitrogen
(7N)?
A.
CaN
B.
Ca2N
C.
Ca2N3
D.
Ca3N2
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7. Element X is in group 2-A, and element Y in group 7-A, of the periodic table.
Which ions will be present in the compound formed when X and Y react
together?
A.
X+ and Y–
B.
X 2+ and Y–
C.
X+ and Y2–
D.
X2– and Y+
8. What is the Lewis (electron dot) structure for sulfur dioxide (8O, 16S)?
A.
O S O
B.
O S O
C.
O
S O
D.
O
S O
9. What happens when sodium (11Na) and oxygen (8O) combine together?
A.
Each sodium atom gains one electron.
B.
Each sodium atom loses one electron.
C.
Each oxygen atom gains one electron.
D.
Each oxygen atom loses one electron
10. Given the Lewis electron-dot diagram:
H
H C H
H
Which electrons are represented by all of the dots? (1H, 6C)
A. the carbon valence electrons, only
B. the hydrogen valence electrons, only
C. the carbon and hydrogen valence electrons
D. all of the carbon and hydrogen electrons
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NAMING IONIC AND COVALENT COMPOUNDS
1. Write the names of the following compounds.
a) SiF4: ………………………………………………………………………………..
b) N2S3:………………………………………………………………………………..
c) Na2CO3: ……………………………………………………………………………
d) Mg3P2: ……………………………………………………………………………………………………………………..
e) CF4: ………………………………………………………………………………….
f) Ag2SO4: ………………………………………………………………………………
g) P2O5: …………………………………………………………………………………
h) Al(CN)3: ………………………………………………………………………………
i) K3PO4: …………………………………………………………………………………
j) NBr3:…………………………………………………………………………………….
2. Write the formulas of the following compounds.
a) Calcium oxide: …………………………………………………………………………
b) Iron (II) bromide: ………………………………………………………………………
c) Iodine pentafluoride: …………………………………………………………………..
d) Silver chloride: …………………………………………………………………………
e) Tetraphosphorus pentasulfide: ……………………………………………………….
f) Aluminium sulfate: ……………………………………………………………………..
g) Barium nitride: ………………………………………………………………………….
h) Chlorine dioxide: ……………………………………………………………………….
i) Magnesium nitrate: ………………………………………………………………………
j) Sulfur tetrachloride ……………………………………………………………………….
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