Chapter 8: Covalent Bonding Vocab, Key Concepts

Question 0

To exist as single atoms

Answer 0

Monoatomic

Question 1

When electrons play “tug of war”, joining 2 atoms together

Answer 1

Covalent Bondin

Question 2

Neutral group of atoms joined together by a covalent bond

Answer 2

Molecule

Question 3

Molecule with 2 atoms

Answer 3

Diatomic Molecule

Question 4

Atoms of different _______ can combine _________ to form _________.

Answer 4

Elements, chemically, molecules

Question 5

Compound composed of molecules

Answer 5

Molecular compound

Question 6

Molecules of a given molecular compound are all ___ _______.

Answer 6

The same

Question 7

What do molecular compounds tend to have compared to ionic compounds?

Answer 7

Lower melting points, lower boiling points

Question 8

What state are most molecular coumpounds in at room temperature?

Answer 8

Gases or liquids

Question 9

Most molecular compounds are composed of what kinds of atoms?

Answer 9

2+ nonmetals

Question 10

A chemical formula of a molecular compound

Answer 10

Molecular formula

Question 11

What does a molecular formula represent?

Answer 11

How many atoms each element of the molecule contains; molecules consistingf one element (e.g. Oxygen)

Question 12

What does a subscript written after a symbol of an element indicate?

Answer 12

The number of atoms in each element of the molecule

Question 13

What does a molecular formula NOT tell you?

Answer 13

The molecules structure/arrangement of the atoms

Question 14

What does a molecular structure show?

Answer 14

How many of each kind of atom are in each molecule, and how the atoms are arranged together

Question 15

What are the only elements that exist in nature as uncombined atoms?

Answer 15

Noble gases

Question 16

Give an example of a diatomic molecule found in Earths atmosphere

Answer 16

N, O

Question 17

Why does electron sharing occur in covalent bonds?

Answer 17

So atoms can attain the electron configurations of noble gases

Question 18

Two atoms held together by sharing a pair of electrons

Answer 18

Single covalent bond

Question 19

What does an electron dot structure represent?

Answer 19

Shared pair of electrons

Question 20

How does the structural formula represent the covalent bonds? What does this representation show?

Answer 20

A dash; the arrangement of covalently bonded atoms

Question 21

A pair of valence electrons not shared between atoms

Answer 21

Unshared/lone/nonbonding pair

Question 22

When do atoms form double or triple bonds?

Answer 22

If they can attain noble gas electron configurations by sharing two or three pairs of electrons

Question 23

Bond involving two shared pairs of electrons

Answer 23

Double covalent bond

Question 24

Formed by sharing 3 pairs of electrons

Answer 24

Triple covalent bond

Question 25

A molecule consisting of 3 atoms

Answer 25

Triatomic

Question 26

Covalent bond where one atom contributes to both bonding electrons

Answer 26

Coordinate covalent bond

Question 27

Tightly bound group of atoms with a +/- charge; behaves as a unit

Answer 27

Polyatomic ion