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AP Chemistry Unit 2A

Authored by Elizabeth Kochevar

Chemistry

11th Grade

AP Chemistry Unit 2A
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45 questions

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1.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The Lewis structure of N2H2 shows __________.

a nitrogen-nitrogen triple bond

a nitrogen-nitrogen single bond

each nitrogen has one lone pair

each nitrogen has two lone pairs

each hydrogen has one lone pair

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which atom can accommodate an octet of electrons, but doesn't necessarily have to accommodate an octet?

N

C

H

O

B

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

As the number of covalent bonds between two atoms increases, the distance between the atoms ______ and the strength of the bond between them ______.

increases, increases

decreases, decreases

increases, decreases

decreases, increases

is unpredictable

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Of the possible bonds between carbon atoms (single, double, and triple), _____.

a triple bond is longer than a single bond

a double bond is stronger than a triple bond

a single bond is stronger than a triple bond

a double bond is longer than a triple bond

a single bond is stronger than a double bond

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The ability of an atom in a molecule to attract electrons is best quantified by the ______.

electronegativity

paramagnetism

diamagnetism

electron change-to-mass ratio

first ionization energy

6.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Which of these bonds takes the most energy to break?

single

double

triple

quadruple

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Potassium iodide, KI,has the following bonding:

ionic

metallic

nonpolar covalent

polar covalent

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