chemical chapter 6

Question 1

chemical bond

Answer 1

an attraction between nuclei and valence electrons

Question 2

polar covalent bond

Answer 2

the unequal sharing of electrons

Question 3

ionic bond

Answer 3

the transfer of electrons

Question 4

nonpolar covalent bonds

Answer 4

the equal sharing of electrons

Question 5

bond polarity of nonpolar covalent bond

Answer 5

0 - 0.3

Question 6

bond polarity of polar covalent bond

Answer 6

0.4 - 0.7

Question 7

bond polarity of ionic bond

Answer 7

> 1

Question 8

molecule

Answer 8

group of atoms that are bonded by covalent bonds

Question 9

the larger the difference, the ____ _______ ________

Answer 9

less covalent character

Question 10

the smaller the difference, the ____ _______ ____________

Answer 10

more covalent character

Question 11

molecule

Answer 11

group of atoms that are bonded by covalent bonds

Question 12

step 1 of a covalent bond forming

Answer 12

atoms are far apart

Question 13

step 2 of a covalent bond forming

Answer 13

atoms closer together

Question 14

step 3 of a covalent bond forming

Answer 14

bond forms, attraction = repulsion

Question 15

can the bond break

Answer 15

yes, if it’s held too tight together, the repulsion will be > than the attraction

Question 16

bond energy

Answer 16

energy released when the bond forms

Question 17

octet rule

Answer 17

goal is to have 8 electrons

Question 18

hydrogen exception

Answer 18

2 electrons

Question 19

helium exception

Answer 19

2 electrons

Question 20

boron exception

Answer 20

6 electrons

Question 21

P exception

Answer 21

can handle 10 electrons

Question 22

S exception

Answer 22

can handle 12 electrons

Question 23

As exception

Answer 23

can handle 10 electrons

Question 24

Se exception

Answer 24

can handle 12 electrons

Question 25

Be exception

Answer 25

can have just 4 electrons

Question 26

what does the dot diagram do?

Answer 26

uses dots to represent the covalent bonds and valence electrons

Question 27

lewis structure

Answer 27

connects the dots to make covalent bond

Question 28

resonance

Answer 28

once you have at least 1 bond, you can move the electrons around

Question 29

ionic compound

Answer 29

compound made of ions

Question 30

formula unit, fu

Answer 30

smallest part of an ionic compound

Question 31

ionic has…?

Answer 31

strong connection btwn fu’s => high melting and boiling point

Question 32

covalent has…?

Answer 32

weak connection btwn fu’s => low melting and boiling point

Question 33

can ionic conduct electricity?

Answer 33

yes only when melting or dissolving in water

Question 34

what is the one weakness of ionic

Answer 34

it only takes one missing piece for chaos to come

Question 35

lewis structure: what happens when there’s a positive and negative charge

Answer 35

+ charge = remove electrons

- charge = add electrons

Question 36

polytomic ions

Answer 36

group of atoms held together by covalent bonds

Question 37

what does VSEPR

Answer 37

valence, shell, electron, pair, repulsion

Question 38

dipole

Answer 38

molecule has partial + end and partial - end

Question 39

shapes

Answer 39

linear, trigonal planar, tetrahedral, trigonal pyramidal, bent; molecular polarity; intermolecular attraction