Topic 6 Practice - Bonding
1. Given the formula for hydrazine:
10. Which type of substance is soft, has a low melting
point, and is a poor conductor of heat and electricity?
A) network solid
C) metallic solid
How many pairs of electrons are shared between the two
nitrogen atoms?
A) 1
B) 2
C) 3
D) 4
2. Which bond is least polar?
A) As–Cl B) Bi–Cl C) P–Cl
D) N–Cl
3. Given the electron dot diagram:
The electrons in the bond between hydrogen and fluorine
are more strongly attracted to the atom of
A)
B)
C)
D)
hydrogen, which has the higher electronegativity
fluorine, which has the higher electronegativity
hydrogen, which has the lower electronegativity
fluorine, which has the lower electronegativity
4. Which substance contains bonds that involved the
transfer of electrons from one atom to another?
A) CO 2
B) NH 3
C) KBr
D) Cl 2
5. Compared to a calcium atom, the calcium ion Ca 2+ has
A) more protons
C) more electrons
B) fewer protons
D) fewer electrons
6. Which compound contains ionic bonds?
A) NO
B) NO 2
C) CaO
D) CO 2
7. A hard substance that has a high melting point and is a
poor conductor of electricity in the solid phase could be
A) CO 2
B) Mg
C) NaCl D) CCl4
8. Which compound has the strongest hydrogen bonding
between its molecules?
A) HBr
B) HCl
C) HF
D) HI
9. Which two substances are covalent compounds?
A)
B)
C)
D)
C6 H12 O6 (s) and KI(s)
C6 H 12 O 6 (s) and HCl(g)
KI(s) and NaCl(s)
NaCl(s) and HCl(g)
B) molecular solid
D) ionic solid
11. Which type of bond is found between atoms of solid
cobalt?
A) nonpolar covalent
C) metallic
B) polar covalent
D) ionic
12. The high electrical conductivity of metals is primarily
due to
A)
B)
C)
D)
high ionization energies
filled energy levels
mobile electrons
high electronegativities
13. Silicon dioxide (SiO 2) and diamonds are best described
as
A) molecular substances with coordinate covalent
bonding
B) molecular substances with ionic bonding
C) network solids with covalent bonding
D) network solids with ionic bonding
14. Which molecule has a nonpolar covalent bond?
A)
B)
C)
D)
15. The degree of polarity of a chemical bond in a molecule
of a compound can be predicted by determining the
difference in the
A) melting points of the elements in the compound
B) densities of the elements in the compound
C) electronegativities of the bonded atoms in a
molecule of the compound
D) atomic masses of the bonded atoms in a molecule
of the compound
16. Which type of molecule is CF 4?
A) polar, with a symmetrical distribution of charge
B) polar, with an asymmetrical distribution of charge
C) nonpolar, with a symmetrical distribution of
charge
D) nonpolar, with an asymmetrical distribution of
charge
17. What is the empirical formula for a compound with the
molecular formula C 6H12Cl 2O2?
A) CHClO
C) C3H 6ClO
B) CH 2ClO
D) C6H12C12O2
18. The compounds C 2H4 and C4H8 have the same
A)
B)
C)
D)
freezing point at standard pressure
boiling point at standard pressure
molecular formula
empirical formula
19. What is the chemical formula for zinc carbonate?
A) ZnCO3
C) Zn2CO 3
B) Zn(CO 3) 2
D) Zn3CO 2
20. The formula H 2O2 is an example of
A)
B)
C)
D)
a molecular formula
an empirical formula
an ionic formula
an organic formula
21. A 1.0-mole sample of krypton gas has a mass of
A) 19 g
B) 36 g
C) 39 g
D) 84 g
22. What is the gram-formula mass of Ca3(PO4) 2 ?
A) 248 g/mol
C) 279 g/mol
B) 263 g/mol
D) 310. g/mol
23. A compound has a molar mass of 90. grams per mole
and the empirical formula CH2O. What is the molecular
formula of this compound?
A) CH 2O
C) C3H 6O 3
B) C2H4O2
D) C4H8O4
24. What is the percent composition by mass of sulfur in
the compound MgSO4 (gram-formula mass = 120.
grams per mole)?
A) 20%
B) 27% C) 46%
D) 53%
25. The correct chemical formula for iron(II) sulfide is
A) FeS
C) FeSO 4
B) Fe 2S3
D) Fe 2(SO4) 3
26. What is the IUPAC name for the compound ZnO?
A) zinc oxide
C) zinc peroxide
B) zinc oxalate
D) zinc hydroxide
Answer Key
Topic 6 Practice - Bonding SHORT
1.
A
2.
D
3.
B
4.
C
5.
D
6.
C
7.
C
8.
C
9.
B
10.
B
11.
C
12.
C
13.
C
14.
A
15.
C
16.
C
17.
C
18.
D
19.
A
20.
A
21.
D
22.
D
23.
C
24.
B
25.
A
26.
A