Chapter 5: Bonding and Compounds

Question 1

Can two different elements bond together to gain stability?

Answer 1

Yes

Question 2

Can atoms of one kind of element bond together to gain stability?

Answer 2

Yes, but not all.

Question 3

Are most atoms unstable when they are not bonded to other atoms?

Answer 3

Yes

Question 4

Are most elements found in their pure form in nature and rarely form compounds outside of scientific laboratories?

Answer 4

No

Question 5

Do molecules form only when different elements bond together?

Answer 5

No

Question 6

Is most of the oxygen in the Earth’s atmosphere in the form O2- two oxygen atoms bonded together?

Answer 6

Yes

Question 7

Do most atoms share, gain, or lose electrons in order to attain 6 electrons in their highest energy level?

Answer 7

No

Question 8

When does the octet rule state that atoms are generally most stable?

Answer 8

Atoms are most stable when their rings are filled in with 8 valence electrons.

Question 9

What does the octet rule generally determine?

Answer 9

-Atoms are most stable when they have a full 8 valence electrons
-In order to get 8 valence electrons, atoms must share or transfer electrons

Question 10

The octet rule can be satisfied when an atoms does what?

Answer 10

-Shares an electron
-Gains enough electrons to have a full octet in it’s valence energy level
-Loses enough electrons to expose full octet of the next lower level

Question 11

The properties of water are different form the properties of hydrogen and oxygen because why?

Answer 11

The hydrogen atoms and oxygen atoms share electrons, so chemical bonding changes the properties.

Question 12

Does chemical bonding preserve the physical and chemical properties of the elements involved?

Answer 12

No

Question 13

What is a chemical bonded between two nonmetals with similar elctronegativity would likely be what?

Answer 13

Covalent

Question 14

Covalent bonding forms _____________, while ionic bonding forms _________.

Answer 14

molecules; crystals

Question 15

Between two oppositely charged ions

Answer 15

Ionic

Question 16

Between atoms with very different electronegativites

Answer 16

Ionic

Question 17

Between elements such as transition metals with similar low elctronegativites

Answer 17

Metallic

Question 18

Most often formed between nonmetals

Answer 18

Covalent

Question 19

Resulting in a sea of shared electrons

Answer 19

Covalent

Question 20

Resulting from two atoms sharing electrons

Answer 20

Metallic

Question 21

Resulting in a molecule

Answer 21

Covalent

Question 22

What is the smallest ratio of ions within an ionic compound called?

Answer 22

Formula unit

Question 23

Can molecules be formed by covalent or ionic bonds?

Answer 23

No

Question 24

Does :N=N: represent a diatomic molecule with a triple covalent bond?

Answer 24

Yes

Question 25

Why does diatomic nitrogen form triple bonds?

Answer 25

Each nitrogen atom needs three electrons to completer it's octet.

Question 26

Can only one covalent bond exist between two atoms?

Answer 26

No

Question 27

Is a double covalent weaker than a single bond?

Answer 27

No

Question 28

Do polar bonds form because some atoms have different electronegativites?

Answer 28

Yes

Question 29

Are electrons shared in covalent bonds not necessarily equally shared?

Answer 29

Yes

Question 30

Are polar molecules partially charged on each end?

Answer 30

Yes

Question 31

Do polar bonds form because atoms of the same element have equal electronegativities?

Answer 31

No

Question 32

Do polar bonds form because some atoms share electrons unequally?

Answer 32

Yes

Question 33

Are electrons transferred between atoms?

Answer 33

Yes

Question 34

Does ionic bonding form compounds known as salts?

Answer 34

Yes

Question 35

Do ionic compounds share electrons relatively equally?

Answer 35

No

Question 36

Does ionic bonding share electrons relatively equally?

Answer 36

No

Question 37

Does ionic bonding occur between elements with very different electronegativites?

Answer 37

Yes

Question 38

What is the Lewis structure for potassium fluoride?

Answer 38

[K]+ [:F:]

Question 39

Can ionic bonds form between two cations or two anions?

Answer 39

No

Question 40

In an ionic bond between an alkali metal atom and a nonmetal atom, the anion is what?

Answer 40

Nonmetal

Question 41

The lack of subscript on the first part of the chemical formula CuSO4?

Answer 41

There is one Nitrogen atom.

Question 42

How many atoms are represented by the chemical formula CuSO4

Answer 42

Six

Question 43

Does a superscript on a chemical formula indicate the number of atoms?

Answer 43

No

Question 44

What would be the chemical formula that would represent the ionic compound potassium nitride?

Answer 44

K3N

Question 45

According to the periodic table, what ratio of ammonium (NH4) to chlorine (Cl-) ions would you expect to find in ammonium chloride?

Answer 45

1:1

Question 46

What is the formula for aluminum oxide? (Aluminum has an oxidation state of +3)

Answer 46

Al2 O3

Question 47

What is the oxidation number for iron in the compound iron (II) sulfate FeSO3?

Answer 47

+2

Question 48

What is the name for the covalent compound SF6?

Answer 48

Sulfur hexafluoride