Question 1

Predict the formula and draw the Lewis structure of magnesium bromide.

Accepted Answer

The answer of Predict the formula and draw the Lewis...

Question 2

The percentage by mass of carbon in methane,CH4,is about

Accepted Answer

A)  25%. 
B)  75%. 
C)  80%. 
D)  20%. 
A)  25%. 
B)  75%. 
C)  80%. 
D)  20%.

Question 3

The formula mass of sulfuric acid,H2SO4,is

Accepted Answer

A)  98 u. 
B)  100 u. 
C)  66 u. 
D)  7 u. 
A)  98 u. 
B)  100 u. 
C)  66 u. 
D)  7 u.

Question 4

Except for hydrogen and helium,atoms in chemical combination tend to have ______________ electrons in their outer shell.

Accepted Answer

A)  8 
B)  14 
C)  6 
D)  2 
A)  8 
B)  14 
C)  6 
D)  2

Question 5

Which of the following elements commonly forms an ion with a 1- charge?

Accepted Answer

A)  Ag 
B)  N 
C)  Br 
D)  Na 
A)  Ag 
B)  N 
C)  Br 
D)  Na

Question 6

A solid solution of two or more metals is called a(n)______________.

Accepted Answer

The answer of A solid solution of two or more...

Question 7

Which of the following compounds should be named using the Stock system?

Accepted Answer

A)  Ag2O 
B)  Au2S 
C)  ZnO 
D)  Al2O3 
A)  Ag2O 
B)  Au2S 
C)  ZnO 
D)  Al2O3

Question 8

Calculate the percentage composition by mass (to the nearest 0.1)of each element in sodium sulfide,Na2S.

Accepted Answer

Question 9

When sodium and chlorine react to form sodium chloride,an ionic compound,

Accepted Answer

A)  each sodium atom loses two electrons. 
B)  each sodium atom loses one electron. 
C)  each chlorine atom loses one electron. 
D)  each chlorine atom loses two electrons. 
A)  each sodium atom loses two electrons. 
B)  each sodium atom loses one electron. 
C)  each chlorine atom loses one electron. 
D)  each chlorine atom loses two electrons.

Question 10

Before it was found that when a substance burns,it is combining with oxygen,it was hypothesized that the burning material released a substance called ______________.

Accepted Answer

The answer of Before it was found that when a...

Question 11

The formula mass for C2H6 is ______________.

Accepted Answer

Question 12

The symbol for the element with the highest electronegativity is ______________.

Accepted Answer

The answer of The symbol for the element with the...

Question 13

When hydrogen,from Group 1A,unites with chlorine,it forms a(n)______________ compound.

Accepted Answer

A)  ionic 
B)  metallic 
C)  covalent 
D)  organic 
A)  ionic 
B)  metallic 
C)  covalent 
D)  organic

Question 14

Mn is a transition element and can form several ions.Its ionic charge in MnF3 must be ______________.

Accepted Answer

Question 15

What electric charge is characteristic for an ion of F?

Accepted Answer

A)  7+ 
B)  0 
C)  1- 
D)  1+ 
A)  7+ 
B)  0 
C)  1- 
D)  1+

Question 16

Another name for solid carbon dioxide is

Accepted Answer

A)  heavy water. 
B)  Epsom salt. 
C)  dry ice. 
D)  quicksilver. 
A)  heavy water. 
B)  Epsom salt. 
C)  dry ice. 
D)  quicksilver.

Question 17

A likely ratio of the masses of oxygen in two different compounds of tin and oxygen,both of which contain the same mass of tin,is

Accepted Answer

A)  1.42 to 1. 
B)  3.11 to 1. 
C)  3.77 to 1. 
D)  2 to 1. 
A)  1.42 to 1. 
B)  3.11 to 1. 
C)  3.77 to 1. 
D)  2 to 1.

Question 18

If aluminum arsenate is AlAsO4,the ionic charge on the arsenate ion must be ______________.

Accepted Answer

Question 19

The percentage composition by mass of nitrogen dioxide is approximately

Accepted Answer

A)  43% N and 57% O. 
B)  33% N and 67% O. 
C)  30% N and 70% O. 
D)  47% N and 53% O. 
A)  43% N and 57% O. 
B)  33% N and 67% O. 
C)  30% N and 70% O. 
D)  47% N and 53% O.

Question 20

The Lewis symbol would be characteristic of which group   ?

Accepted Answer

A)  2A 
B)  4A 
C)  3A 
D)  5A 
A)  2A 
B)  4A 
C)  3A 
D)  5A

Exam 12: Chemical Bonding

Predict the formula and draw the Lewis structure of magnesium bromide.

The percentage by mass of carbon in methane,CH4,is about

The formula mass of sulfuric acid,H2SO4,is

Except for hydrogen and helium,atoms in chemical combination tend to have ______________ electrons in their outer shell.

Which of the following elements commonly forms an ion with a 1- charge?

A solid solution of two or more metals is called a(n)______________.

Which of the following compounds should be named using the Stock system?

Calculate the percentage composition by mass (to the nearest 0.1)of each element in sodium sulfide,Na2S.

When sodium and chlorine react to form sodium chloride,an ionic compound,

Before it was found that when a substance burns,it is combining with oxygen,it was hypothesized that the burning material released a substance called ______________.

The formula mass for C2H6 is ______________.

The symbol for the element with the highest electronegativity is ______________.

When hydrogen,from Group 1A,unites with chlorine,it forms a(n)______________ compound.

Mn is a transition element and can form several ions.Its ionic charge in MnF3 must be ______________.

What electric charge is characteristic for an ion of F?

Another name for solid carbon dioxide is

A likely ratio of the masses of oxygen in two different compounds of tin and oxygen,both of which contain the same mass of tin,is

If aluminum arsenate is AlAsO4,the ionic charge on the arsenate ion must be ______________.

The percentage composition by mass of nitrogen dioxide is approximately

The Lewis symbol would be characteristic of which group ?

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The percentage by mass of carbon in methane,CH₄,is about

The formula mass of sulfuric acid,H₂SO₄,is

Calculate the percentage composition by mass (to the nearest 0.1)of each element in sodium sulfide,Na₂S.

The formula mass for C₂H₆ is ______________.

Mn is a transition element and can form several ions.Its ionic charge in MnF₃ must be ______________.

If aluminum arsenate is AlAsO₄,the ionic charge on the arsenate ion must be ______________.