Chemical Bonding I: Basic Concepts

Question 1

the linking/attraction of atoms to form compounds

Answer 1

Chemical Bonding

Question 2

the outer shell electrons of an atom

Answer 2

Valence Electrons

Question 3

The valence electrons are the electrons that participate in…

Answer 3

chemical bonding

Question 4

___ are also involved in chemical reactions

Answer 4

innermost electrons

Question 5

chemical reactions that involve the nucleus, which produces large amounts of energy.

Answer 5

Nuclear Reactions

Question 6

the tendency of atoms to prefer to have eight electrons in the valence shell

Answer 6

Octet Rule

Question 7

the family not much involved in transferring of electrons but in sharing

Answer 7

4A

Question 8

a representation of the valence electrons of an atom that uses dots around the symbol of the element

Answer 8

Lewis Dot Symbol/Structure

Question 9

pairing starts when there are more than _ electrons

Answer 9

4

Question 10

paired electrons are called…

Answer 10

lone pair

Question 11

cause bonding to have 8 electrons

Answer 11

Unpaired Electrons

Question 12

inactive family because they do not need to bond with other atoms/elements

Answer 12

8A

Question 13

Bonding happens between metals and non-metals.

Answer 13

Ionic Bonding

Question 14

the energy required to completely separate one mole of a solid ionic compound into gaseous ions.

Answer 14

Lattice Energy (E)

Question 15

kilojoules per mole

Answer 15

kJ/mol

Question 16

the temperature where elements melt from being solid to liquid.

Answer 16

melting point

Question 17

More lattice energy =

Answer 17

more heat required

Question 18

a chemical bond in which two or more electrons are shared by two atoms.

Answer 18

Covalent Bond

Question 19

unpaired electrons will be shared to the other unpaired, the process is called ____

Answer 19

Covalent Bonding

Question 20

product of covalent bonding

Answer 20

covalent compound

Question 21

represents sharing

Answer 21

dash (-)

Question 22

Covalent bonds can be single, double, or triple depending on the number of _____

Answer 22

sharing

Question 23

two atoms share two pairs of electrons

Answer 23

double bond

Question 24

two atoms share three pairs of electrons

Answer 24

triple bond

Question 25

refers to the measurement of the radius of the 1st atom to the radius of the 2nd atom.

Answer 25

Lengths of Covalent Bond

Question 26

unit of measurement used to measure atomic structures.

Answer 26

Picometre (pm)

Question 27

Picometer is ___ of a meter

Answer 27

One trillionth

Question 28

More bonds indicate shorter length because if atoms are bonded more times, it becomes __ to each other

Answer 28

closer

Question 29

___ = closer = shorter

Answer 29

more attraction

Question 30

less bonding =

Answer 30

less attraction

Question 31

a covalent bond with greater electron density around one of the two atoms.

Answer 31

polar covalent bond or polar bond

Question 32

Polar covalent bond is a covalent bond with ____ sharing of electrions

Answer 32

unequal

Question 33

there's ____ charges in polar covalent bond

Answer 33

partial

Question 34

_____ is the region where electrons are being drawn to.

Answer 34

Electron rich region

Question 35

______ is the region where electrons are being drawn away from.

Answer 35

Electron poor region

Question 36

_____ - indicates that there is partially negative fluorine

Answer 36

Sigma negative

Question 37

the ability of an atom to attract ELECTRONS toward itself in a chemical bond.

Answer 37

Electronegativity

Question 38

____ has the highest electron affinity.

Answer 38

Chlorine

Question 39

____ has the highest electronegativity.

Answer 39

Fluorine

Question 40

Electronegativity increases from:

Answer 40

Left to right Bottom to top

Question 41

_____ is a covalent bond with equal electron sharing.

Answer 41

Non-polar covalent bond

Question 42

Highest electronegativity difference =

Answer 42

Ionic

Question 43

Lowest electronegativity difference =

Answer 43

Non-polar

Question 44

a very simplified representation of the valence shell electrons in a molecule

Answer 44

Lewis Structure

Question 45

In writing Lewis Structures, draw the _____ of compound showing what atoms are bonded to each other.

Answer 45

skeletal structure

Question 46

Put the ___ electronegative element in the center.

Answer 46

least

Question 47

Count total number of _____ e-. Add 1 for each negative charge. Subtract 1 for each positive charge

Answer 47

valence

Question 48

Complete an octet for all atoms except...

Answer 48

hydrogen

Question 49

If structure contains too many electrons, form double and triple bonds on ____ as needed

Answer 49

central atom

Question 50

A ____ is one of two or more Lewis structures for a single molecule that cannot be represented accurately by only one Lewis structure.

Answer 50

resonance structure

Question 51

The enthalpy change required to break a particular bond in one mole of gaseous molecules is the...

Answer 51

bond energy

Question 52

More bond requires more ____ to break it

Answer 52

energy

Question 53

Average ____ in polyatomic molecules

Answer 53

bond energy