Exam 2 Review

Question 1

T/F: An ionic compound cannot contain covalent bonds.

Accepted Answer

false

Question 2

Which represents a covalent (molecular) substance?

Accepted Answer

a, b, c, e

Question 3

Nonmetals have ______ electron affinities and ______ first ionization energies.

Accepted Answer

high; high

Question 4

Which of the following functions does NO (nitric oxide) perform?

Accepted Answer

all of these answers are correct

Question 5

T/F: The shape of a CO2 molecule is bent.

Accepted Answer

false

Question 6

All of the following are true of ionic compounds EXCEPT:

Accepted Answer

Cations are larger than anions.

Question 7

CO is toxic in moderate amounts because it prevents ______ from binding to hemoglobin.

Accepted Answer

oxygen

Question 8

The ___ circle could represent a calcium ion, and the ___ circle could represent an oxide ion.

Accepted Answer

green; red

Question 9

Which is the most electronegative atom?

Accepted Answer

fluorine

Question 10

Which represents an ionic compound?

Accepted Answer

d, f, g

Question 11

Choose the formula/name pair that is INCORRECTLY matched (all formulas are correctly written):

Accepted Answer

(NH4)2S ; ammonium sulfate

Question 12

Is this Lewis structure valid or invalid?

Accepted Answer

invalid; has 14 e- when it should have 16

Question 13

State the geometry about the indicated atom.

Accepted Answer

tetrahedral

Question 14

Write the symbol for an ion that has 29 protons and 27 electrons.

Accepted Answer

Cu2+

Question 15

T/F: The electron affinity equation is Atom + Energy → Cation + e-

Accepted Answer

false

Question 16

______ form when electrons are lost and _____ form when electrons are gained.

Accepted Answer

cations; anions

Question 17

Which of the following is NOT one of the seven homonuclear diatomic elements?

Accepted Answer

These are all homonuclear diatomic elements

Question 18

T/F: Metals bind to nonmetals by covalent bonding.

Accepted Answer

false

Question 19

T/F: Nonpolar molecules can contain polar bonds.

Accepted Answer

true

Question 20

This image could represent which of the following ionic compound(s)?

Accepted Answer

Both Li2SO4 and Na2CO3

Question 21

The smallest particles of ionic compounds are the _______.

Accepted Answer

ions

Question 22

State the geometry about the indicated atom.

Accepted Answer

trigonal planar

Question 23

The majority of salt in our diet comes from:

Accepted Answer

processed and prepared foods

Question 24

Write the First Ionization equation for oxygen.

Accepted Answer

O + energy → O+ + e-

Question 25

State the geometry about the indicated atom.

Accepted Answer

pyramidal

Question 26

Is this Lewis structure valid or invalid?

Accepted Answer

invalid; contains 26 e- when it should contain 24 e-

Question 27

How many particles make up one formula unit of Al(HSO4)3 (aluminum hydrogen sulfate)?

Accepted Answer

4

Exam 2 Review

Questions 27

Exam 2 Review

Questions 27