chapter 2

Question 1

ionic compounds are composed of

Answer 1

cation and anion

Question 2

ions are held together by

Answer 2

electrostatic forces (forces of attraction): IONIC BOND

Question 3

ionic compounds have a ___ structure

Answer 3

crystal lattice

Question 4

ionic crystals resist being

Answer 4

stretched: they are very hard

Question 5

ionic crystals is offset when struck, it

Answer 5

fractures easily (offset, resulting in +ve and -ve charges contacting their own charges: repulsion)

Question 6

the strong electrostatic forces that hold ionic crystals together require

Answer 6

a huge amount of energy to melt them

Question 7

ionic compounds are ___ and can conduct electricity in molten liquid state and when dissolved in water

Answer 7

electrolytes

Question 8

gatorade contains ___ that help carry electrical impulses throughout body

Answer 8

electrolytes

Question 9

ionic compounds do NOT form

Answer 9

molecules (that’s molecular compounds dummy)

Question 10

properties of ionic compounds

Answer 10

hard and brittle

Question 11

all ionic compounds are ___ at room temperature

Answer 11

solids

Question 12

ionic compounds are composed of extremely large amounts of

Answer 12

positive and negative ions in a fixed ratio

Question 13

formula unit for MgCl2 to s

Answer 13

MgCl2: smallest fixed ratio is 1:2

Question 14

ionic compounds are composed of a metal and

Answer 14

a nonmetal

Question 15

molecular compounds are composed of two

Answer 15

nonmetals

Question 16

zero sum rule (ionic)

Answer 16

positive charges = negative charges

Question 17

multivalent metals will have a

Answer 17

roman numeral since they have more than one valence

Question 18

molecular element

Answer 18

two or more atoms of the same element (diatomic elements)

Question 19

elements in molecules __ electrons

Answer 19

share

Question 20

ionic have high melting points while molecules have

Answer 20

low melting points

Question 21

molecular compounds can be any

Answer 21

state at room temp

Question 22

bonding capacity is

Answer 22

the humber of covalent holds an atom can form

Question 23

the number of single electrons in a valence shell is their

Answer 23

bonding capacity

Question 24

covalent bond

Answer 24

sharing pair of electrons

Question 25

electronegativity was developed by

Answer 25

linus pauling in ´22

Question 26

electronegativity is the measure of an atom to

Answer 26

attract electrons

Question 27

electronegativity increases

Answer 27

across a period, decreases down a group

Question 28

electronegativity is the opposite trend of

Answer 28

atomic radius

Question 29

as an atom size increases, it’s attraction for shared electrons

Answer 29

weakens

Question 30

molecular non covalent bond

Answer 30

identical electronegativities

Question 31

molecular polar covalent bond

Answer 31

significantly different electronegativities, between 0 and 1.7

Question 32

ionic bond

Answer 32

above 1.7

Question 33

when the ENC increases, the attraction to electrons

Answer 33

strengthens

Question 34

electronegativity shows

Answer 34

the outcome in a tug of war (atoms)

Question 35

high EN=

Answer 35

very good at attracting electrons

Question 36

fluorine has a very high

Answer 36

EN

Question 37

electrons in an ionic bond spend much more time on element with

Answer 37

larger electronegativity

Question 38

definite positive and negative charge associate with each

Answer 38

ion