Chapter 8 Covalent Bonds

Question 1

What is a covalent bond in which 3 pairs of electrons are shared by 2 bonded atoms?

a. electronegative
b. triple covalent bond
c. polar bond

Answer 1

b. triple covalent bond

Question 2

What is the tendency of an atom to attract electrons to itself?

a. nonpolare covalent bond
b. polar bond
c. electronegative

Answer 2

c. electronegative

Question 3

What is a covalent bond involving 2 pairs of electrons that are shared by two bonded atoms?

a. double covalent bond
b. polar bond
c. nonpolar covalent bond

Answer 3

a. double covalent bond

Question 4

What is it when electrons are shared equally between two atoms?

a. molecule
b. nonpolar covalent bond
c. sutructural formula

Answer 4

b. nonpolar covalent bond

Question 5

What are particles that results when 2 or more atoms are covalently bonded?

a. double covalent bond
b. polar bond
c. molecule

Answer 5

c. molecule

Question 6

What is it called when electrons are NOT shared equally between two atoms?

a. nonpolar covalent bond
b. polar covalent bond
c. single covalent bond

Answer 6

b. polar covalent bond

Question 7

What is a covalent bond in which 1 pair of electrons are shared by 2 bonded atoms?

a. structural formula
b. electronegative
c. single covalent bond

Answer 7

c. single covalent bond

Question 8

What is the chemical formula that shows the arrangement of atoms of molecules?

a. structural formula
b. double covalent bond
c. polar bond

Answer 8

a. structural formula

Question 9

Which one of the following exists as a diatomic molecule?

a. Na
b. Ar
c. Cl

Answer 9

c. Cl

Question 10

Which molecule has single covalent bonds?

a. F2
b. N2
c. S2

Answer 10

a. F2

Question 11

Why do atoms share electrons?
To acquire the electron configuration of:
a.  Alkaline earth metals
b.  Noble Gas
c.  Halogens

Answer 11

b. Noble Gas

Question 12

What is the bond IF the bonding pair of electrons is unequally shared between two atoms?

a. nonpolar
b. polar
c. Ionic

Answer 12

b. polar

Question 13

Which of the following would NOT have covalent bonds?

a. N2O4
b. NO2
c. KO2

Answer 13

c. KO2

Question 14

Be able to draw the elctron dot diagrams for covalent molecules with a SINGLE COVALENT BOND?

Answer 14

See Mrs. Krumpelman for help

Question 15

Draw the structural formuala for two elements that contain a double bond

Answer 15

See Mrs. Krumpelman for help

Question 16

Be able to calculate the elctronegativity difference between pairs of elements and tell the type of bond.

Ex: K and S

Answer 16

2.5 - .8 = 1.7 / Very Polar

Question 17

Compare the behavior of bonding electrons in a non-polar bond with that of the electrons in a polar bond.

Answer 17

Non-polar - - when the atoms are the same - the bonding electrons are shared equally
Polar - - they atoms are joined by covalent bonds and the bonding electrons are NOT shared equally

Question 18

Draw a water molecule - indicate the postive and negative ends of the molecule and why are they bend.

Answer 18

See Mrs. Krumpelman

Question 19

Be able to discuss monoatomic and diatomic

Answer 19

Monoatomic becasue it already has 8 ve- and is already octet

Diatomic needs to share with another to become an octet or have 8 ve-

Question 20

Be able to count how may UNSHARED pairs are on a dot diagram.

Answer 20

See Mrs. Krumpelman

Question 21

Be able to explain why something is called a rsonance structure.

Answer 21

When a structure has the ability to flip/flop the structure and it will remain the same

Question 22

What is the difference between ionic bond and a covalent bond?

Answer 22

ionic bonds the e- are transferred and in covalent bonds the e- are shared

Question 23

Be able to draw the 4 shapes of molecules and label each

Answer 23

See Mrs. Krumpelman