CHEMICAL BONDING QUIZ X Part II

1. Which substance contains a bond with the greatest ionic character?
a. KCl
b. HCl
c. HF
d. Cl2
e. F2
2. What do ionic solids have between particles?
a. very strong ionic bonds
b. very weak ionic bonds
c. relatively weak ionic bonds
d. relatively strong ionic bonds
3. Which substance conducts electricity when melted but not when solid?
a. a molecular compound
b. an ionic compound
c. a metal
d. a nonmetal
4.An element with an electronegativity of 0.9 bonds with an element with an electronegativity of 3.1. Which phrase best describes the bond between these elements?
a.mostly ionic in character and formed between two nonmetals
b.mostly ionic in character and formed between a metal and a nonmetal
c.mostly covalent in character and formed between two nonmetal
d.mostly covalent in character and formed between a metal and a nonmetal
e.mostly covalent in character and formed between two metals
5. Which compound has the highest melting point?
a. HC1
b. NaCl
c. CO2
d. H2SO4
e. NO2
6.Which is not an identity of the bond formed between 2 hydrogen atoms?
a.non polar bond
b.sharring of electrons
c.single covalent bond
d.double covalent bond
7.One valence electron from each chlorine atoms are transferred.How many valence electrons are shared in a double bond?
a. 2
b. 3
c. 4
d. 6
e. 8
8.A triple bond is formed when ….
a. 1 pair of electrons is shared.
b. 2 pairs of electrons are shared.
c. 3 pairs of electrons are shared.
d. 4 pairs of electrons are shared.
9. In a multiple covalent bond ….
a.only one pair of electrons is shared.
b.more than one pair of electrons is shared between two atoms.
c.more than one pair of electrons is shared between four atoms.
d.more than two pair of electrons is shared between two atoms.
10. HCl is formed ….
a. when 1 pair of valence electrons is shared, one from the hydrogen atom and one from the chlorine atom.
b.when 1 pair of valence electrons is shared, none from the hydrogen atom and two from the chlorine atom.
c.when hydrogen atom give off one valence electron to chlorine atom.
d.when chlorine atom give off one valence electron to hydrogen atom.
11. The electrons in the bond between hydrogen and flourine are more strongly attracted to the atom of ….
a.hydrogen, which has the higher electronegativity
b.fluorine, which has the higher electronegativity
c.hydrogen, which has the lower electronegativity
d.fluorine, which has the lower electronegativity
12. Which compound contains a covalent bond?
a. HCl
b. NaCl
c. KF
d. BaO
e. Li2O
13. When a reaction occurs between atoms with electron configurations of (2,8,5) and (2,7), the bond formed is mainly ….
a. ionic
b. polar covalent
c. metallic
d. coordination
e. nonpolar covalent
14. In which compound do atoms form bonds by sharing electrons?
a. H2O
b. CaO
c. Na2O
d. MgO
e. K2O
15. What is the maximum number of covalent bonds that a carbon atom can form?
a. 1
b. 2
c. 3
d. 4
e. 5
16. Which pair of bonds will share electrons when a bond is formed between them?
a. Ba and I
b. Br and Cl
c. K and Cl
d. Li and I
e. Na and Br
17. Which substance contains nonpolar covalent bonds?
a. H2
b. Ca(OH)2
c. HF
d. H2O
e. CaO
18. Which compound contains both ionic and covalent bonding?
a. MgCl2
b. CO2
c. KNO3
d. KI
e. HclO
19. Silicon dioxide (SiO2) 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