AP Chemistry - Unit 2 Review

AP Chemistry - Unit 2 Review

11th Grade

10 Qs

quiz-placeholder

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AP Chemistry - Unit 2 Review

AP Chemistry - Unit 2 Review

Assessment

Quiz

Chemistry

11th Grade

Medium

NGSS
HS-PS1-2, HS-PS1-3, HS-PS2-4

+1

Standards-aligned

Created by

Corinne Lindemann

Used 213+ times

FREE Resource

10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Answer explanation

Ionic substances will have high melting points due to their high lattice energy.

Tags

NGSS.HS-PS1-3

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following molecules is nonpolar?

HF

Answer explanation

Though the C-F bond will be very polar due to the difference in electronegativity, the symmetry of this molecule makes it nonpolar.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following substances will have the highest melting point? Hint - think about lattice energy and Coulomb's Law.

NaCl

NaF

Answer explanation

Magnesium has a larger charge (+2) compared to sodium (+1). The fluorine ion will be much smaller than chlorine, and therefore, the ions will be more tightly packed (and harder to separate) in MgF2.

Tags

NGSS.HS-PS1-3

NGSS.HS-PS2-4

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Bronze is a(n) ______ alloy.

Interstitial

Intertwined

Substitutional

Substertial

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Determine the formal charge on the central atom of the nitrate ion.

+1

0

-1

-2

Answer explanation

To determine formal charge, remember:

valence - "dots" - "sticks"

valence electrons - lone pairs - (bonded electrons/2)

For this ion, nitrogen is the central atom:

5 valence - 0 lone pairs - 4 bonds = 1

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Phosphorus pentachloride will have which molecular geometry?

Trigonal planar

Trigonal pyramidal

Trigonal bypyramidal

Octahedral

Answer explanation

Memorize these geometries!

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

What is the bond hybridization of the central carbon in dichloromethane?

sp

Answer explanation

To determine hybridization, count the total number of bonds and lone pairs on the central atom.

The carbon atom in CH2Cl2 has 4 bonds and no lone pairs; therefore, it has sp3 hybridization.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

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