unit 5 review

Question 1

define ionic bond

Answer 1

chemical bonding that results from the electrical attraction between cations & anions.

Question 2

define covalent bond

Answer 2

results from sharing of electron pairs between 2 atoms.

Question 3

define metallic bond

Answer 3

results from the attraction between metal atoms and a surrounding sea of electrons.

Question 4

rules for naming IONIC compounds

Answer 4

1. determine charge of each element
2. use crossover method; the charges of 1 element becomes the subscript of the element its bonding to.

Question 5

list rules and prefixes for naming molecular compounds

Answer 5

1. write name for both elements.
2. change ending of 2nd element -> ide
3. place prefixes in front of each element based on atoms present

⭐️. prefix ‘mono’ is only used on second NONMETAL

tetra -> 4
pentra -> 5
hexa -> 6
hepta -> 7
nona -> 9

Question 6

define polarity in terms of electronegativity?

Answer 6

the greater the difference in electronegativity between 2 atoms, the more polar the chemical bond will be.

Question 7

difference between intermolecular and intramolecular forces?

Answer 7

INTERmolecular = forces BETWEEN molecules

INTRAmolecular = forces WITHIN a molecule

Question 8

name the bonds from strongest to weakest:

polar covalent, non polar, ionic

Answer 8

STRONGEST: IONIC
2nd strong: polar-covalent
WEAKEST: NON-POLAR

Question 9

difference between covalent bonds and ionic bonds

Answer 9

covalent = NONmetal –
NONmetal

ionic = metal – NONmetal

Question 10

what is happening with electrons in covalent bond

Answer 10

if NONpolar: electrons shared EQUALLY

if POLAR: electrons shared unequally, one atom has stronger force of attaction

Question 11

what is happening with electrons in IONIC bond

Answer 11

the atom that GAINED = NEG

the atom that LOSES = POS

Question 12

naming steps for

covalent bonds

Answer 12

1. identify elements.
2. look @ prefixes to determine how many in compound – use as subscript

carbon dioxide = CO2

Question 13

naming steps for

ionic bonds

Answer 13

1. determine charge of each element
2. use crossover method.

Question 14

a chemical bond between atoms results from the attraction between the valence electrons and ___ of diff. atoms

a. nuclei
b. inner electrons
c. isotopes
d. lewis structure

Answer 14

a. nuclei

Question 15

a covalent bond consists of

a. shared electron
b. shared electron pair
c. 2 different ions
d. an octet of electrons

Answer 15

b. shared electron pair

Question 16

if 2 covalently bonded atoms are identical, the bond is identified as

a. nonpolar covalent
b. polar covalent
c. ionic
d. dipolar

Answer 16

a. nonpolar covalent

Question 17

a covalent bond in which there is an unequal attraction for the shared electrons is

a. nonpolar
b. polar
c. ionic
d. dipolar

Answer 17

b. polar

Question 18

atoms with a strong attraction for electrons they share with another atom exhibit

a. 0 electronegativity
b. low electronegativity
c. high electronegativity
d. Lewis electronegativity

Answer 18

c. high electronegativity

Question 19

the greater the electronegativity difference between 2 atoms bonded together, the greater the bond’s percentage of

a. ionic charatrer
b. nonpolar character
c. metallic character
d. electron sharing

Answer 19

a. ionic character

Question 20

in a molecular solid, what is happening to the molecules?

Answer 20

in a molecular solid, individual molecules in the solid state are attracted to each other by relatively WEAK inter-molecular forces between the molecules.

Question 21

what is happening in covalent network solids?

Answer 21

covalent-network solids, consist of atoms forming covalent bonds with each other in all directions.

Question 22

when to use roman numerals when naming ionic compounds

Answer 22

only use roman numerals when naming ionic compounds that have cations with more than one possible positive charge.