unit 4

Question 1

how do you find molecular formula?

Answer 1

1. find the empirical formula
2. calculate the mass of the empirical formula
   3.divide the molar mass by the empirical formula mass
3. multiply the empirical formula by the whole number found in step 3

Question 2

what is the first step to finding molecular formula?

Answer 2

1.find the empirical formula

Question 3

what is the second step to finding molecular formula

Answer 3

2. calculate the mass of the empirical formula

Question 4

what is the third step to finding molecular formula

Answer 4

3. divide the molar mass by the empirical formula mass

Question 5

what the fourth step to finding molecular formula

Answer 5

4.multiply the empirical formula by the whole number found in step 3

Question 6

what prefixes do you use to name hyrdates

Answer 6

the same prefixes as covalent

Question 7

metal is what type of bond

Answer 7

ionic

Question 8

non-metal is what type of bond

Answer 8

covalent

Question 9

how do you name covalent compounds

Answer 9

prefix for element 1 + element 1
prefix for element 2 +element 2

Question 10

what are ionic bonds made up of

Answer 10

metals + non-metals

Question 11

what charge dose zinc always have

Answer 11

+2

Question 12

because zinc is always +2 what dose it not need when you write its name

Answer 12

roman numeral

Question 12

what charge dose silver always have

Answer 12

+1

Question 12

cupric

Answer 12

copper 2

Question 13

cuprous

Answer 13

copper 1

Question 14

ferrous

Answer 14

iron 2

Question 15

ferric

Answer 15

iron 3

Question 16

covalent bonds are made up of what

Answer 16

non-metals

Question 17

mono

Answer 17

1

Question 18

di

Answer 18

2

Question 19

1

Answer 19

mono

Question 20

2

Answer 20

di

Question 21

tri

Answer 21

3

Question 22

3

Answer 22

tri

Question 23

tetra

Answer 23

4

Question 24

4

Answer 24

tetra

Question 25

penta

Answer 25

5

Question 26

5

Answer 26

penta

Question 27

hexa

Answer 27

6

Question 28

6

Answer 28

hexa

Question 29

hepta

Answer 29

7

Question 30

7

Answer 30

hepta

Question 31

octa

Answer 31

8

Question 32

8

Answer 32

octa

Question 33

nona

Answer 33

9

Question 34

9

Answer 34

nona

Question 35

deca

Answer 35

10

Question 36

10

Answer 36

deca

Question 37

when writing covalent forms what do you not do

Answer 37

switch the charges

Question 38

if it has metal what is it

Answer 38

ionic

Question 39

if it does not have metal what is it

Answer 39

covalent

Question 40

carbonate

Answer 40

CO3 -2

Question 41

CO3 -2

Answer 41

carbonate

Question 42

sulfate

Answer 42

SO4 -2

Question 43

SO4 -2

Answer 43

sulfate

Question 44

sulfite

Answer 44

SO3 -2

Question 45

SO3 -2

Answer 45

sulfite

Question 46

nitrate

Answer 46

NO3 -1

Question 47

NO3 -1

Answer 47

nitrate

Question 48

nitrite

Answer 48

NO2 -1

Question 49

NO2 -1

Answer 49

nitrite

Question 50

hydroxide

Answer 50

OH -1

Question 51

OH -1

Answer 51

hydroxide

Question 52

ammonium

Answer 52

NH4 +1

Question 53

NH4 +1

Answer 53

ammonium

Question 54

phosphate

Answer 54

PO4 -3

Question 55

PO4 -3

Answer 55

phosphate

Question 56

CN -1

Answer 56

cyanide

Question 57

cyanide

Answer 57

CN -1

Question 58

acetate

Answer 58

C2H3O2 -1

Question 59

C2H3O2 -1

Answer 59

acetate

Question 60

permanganate

Answer 60

MnO4 -1

Question 61

MnO4 -1

Answer 61

permangnate

Question 62

chromate

Answer 62

CrO4 -2

Question 63

CrO4 -2

Answer 63

chromate

Question 64

dichromate

Answer 64

Cr2O7 -2

Question 65

Cr2O7 -2

Answer 65

dichromate

Question 66

ScN -1

Answer 66

thiocyanate

Question 67

thiocyanate

Answer 67

ScN -1

Question 68

has metal or ammonium

Answer 68

ionic

Question 69

dose not have metal or ammonium

Answer 69

covalent

Question 70

hydrate formula

Answer 70

H2O

Question 71

how do you write a hydrate in a formula

Answer 71

covalent prefix + name

Question 72

what is the structure of alkane

Answer 72

all single bonds between carbon

Question 73

what is the structure of alkene

Answer 73

double bond between carbons

Question 74

what is the structure of alkyne

Answer 74

triple bond between carbons

Question 75

how do you find precent composition

Answer 75

%= part/whole X 100

Question 76

%= part/whole X 100 is how you find whta?

Answer 76

precent composition

Question 77

how do you find empirical formula

Answer 77

1. change the precent to mass 2. change the mass to moles 3.divide by the smallest answer from last step 4.multiply until whole

Question 78

what is the first step to finding empirical formula

Answer 78

1. change the precent to mass(grams)

Question 79

what is the second step to finding empirical formula

Answer 79

2. change the mass to moles

Question 80

what is the third step to finding empirical formula

Answer 80

3. divide by the smallest

Question 81

what is the fourth step to finding empirical formula

Answer 81

4. multiply until whole

Question 82

how do you change mass to moles when finding empirical formula

Answer 82

you divide the mass (the precent that was converted to grams) by the mass on the periodic table

Question 83

nitrogen always has how many lone pairs

Answer 83

1 (2 dots)

Question 84

what element always has one lone pair

Answer 84

nitrogen

Question 85

what is a lone pair?

Answer 85

two dots, or two electrons

Question 86

how many lone pairs does oxygen always have

Answer 86

2 lone pairs (4 dots)

Question 87

what element always has 2 lone pairs

Answer 87

oxygen

Question 88

what elements have 3 lone pairs

Answer 88

F, Cl, Br, I

Question 89

F, Cl, Br, I, have how many lone pairs

Answer 89

3