Question 1

Which color represents the element nitrogen (N) in the molecular models shown?

Accepted Answer

Blue

Question 2

Given a molecular model with two black balls, six white balls, and one red ball, what is the correct molecular formula for this compound?

Accepted Answer

$\mathrm{C_2H_6O}$

Question 3

If a molecular model contains one blue ball and three white balls, which compound does it most likely represent?

Accepted Answer

$\mathrm{NH_3}$

Question 4

A molecular model shows one black ball bonded to four white balls. What is the name and formula of this molecule?

Accepted Answer

Methane, $\mathrm{CH_4}$

Question 5

Which molecular model would best represent water ($\mathrm{H_2O}$)?

Accepted Answer

One red ball bonded to two white balls

Question 6

If a molecular model contains one black ball, two red balls, and no white balls, what is the molecular formula?

Accepted Answer

$\mathrm{CO_2}$

Question 7

A molecular model shows one green ball bonded to one black ball and three white balls. Which compound is this?

Accepted Answer

$\mathrm{CH_3Cl}$

Question 8

Which of the following molecular models represents phosphine ($\mathrm{PH_3}$)?

Accepted Answer

One orange ball bonded to three white balls

Question 9

A molecular model contains two black balls, six white balls, and no other colors. What is the name of this molecule?

Accepted Answer

Ethane

Question 10

If a molecular model contains one black ball, one blue ball, and three white balls, what is the correct molecular formula?

Accepted Answer

$\mathrm{CH_3NH_2}$

Question 11

Which molecular model would best represent hydrogen chloride ($\mathrm{HCl}$)?

Accepted Answer

One white ball bonded to one green ball

Question 12

A molecular model shows two black balls, six white balls, and one red ball. What is the name of this molecule?

Accepted Answer

Ethanol

Question 13

Which of the following is a correct representation of the molecular model for methane ($\mathrm{CH_4}$)?

Accepted Answer

One black ball bonded to four white balls

Question 14

If a molecular model contains one black ball, one red ball, and two white balls, what is the molecular formula?

Accepted Answer

$\mathrm{CH_3OH}$

Question 15

A molecular model shows one black ball bonded to one blue ball and three white balls. What is the name of this molecule?

Accepted Answer

Methylamine

Question 16

Which molecular model would best represent carbon dioxide ($\mathrm{CO_2}$)?

Accepted Answer

One black ball bonded to two red balls

Question 17

A molecular model contains one black ball, one green ball, and three white balls. What is the name of this molecule?

Accepted Answer

Chloromethane

Question 18

If a molecular model contains one orange ball and three white balls, what is the molecular formula?

Accepted Answer

$\mathrm{PH_3}$

Question 19

A molecular model shows two black balls, six white balls, and one red ball. Which of the following is the correct name and formula for this molecule?

Accepted Answer

Ethanol, $\mathrm{C_2H_5OH}$

Question 20

Which molecular model would best represent ammonia ($\mathrm{NH_3}$)?

Accepted Answer

One blue ball bonded to three white balls

Molecular Models of Elements and Chemical Bonding

Study Guide - Practice Questions