CHEM FINAL

Question 1

Cation naming rules

Answer 1

a:metal name only
b:metal name (roman umerical charge)
c:nonmetal cation name

Question 2

anion naming rules

Answer 2

a:use —ide with monoatomic anions and OH-, CN-, and O2 2-
b:use –ate or —ite for polyatomic oxyanions

Question 3

acid naming rules based on anion

Answer 3

–ide
–ate
–ite
hydro–ic acid
–ic acid
–ous acid

Question 4

H compound naming

Answer 4

prefix+hydrogen anion

Question 5

molecular naming

Answer 5

prefix+name (element 1)
prefix + short name –ide (element 2)

Question 6

ClO3-

Answer 6

chlorate

Question 7

SO4 2-

Answer 7

sulfate

Question 8

NO3-

Answer 8

nitrate

Question 9

PO4 3-

Answer 9

phosphate

Question 10

CO3 2-

Answer 10

carbonate

Question 11

OH-

Answer 11

hydroxide

Question 12

CN-

Answer 12

cyanide

Question 13

O2 2-

Answer 13

peroxide

Question 14

78
Se 2-
34

Answer 14

H=34

#N=78-34=44
#e-=34+2=36

Question 15

weighted mass=

Answer 15

sum(natural abundance x mass)

Question 16

Energy=

Answer 16

mass x speed of light

Question 17

1 amu=

Answer 17

931.5 meV

Question 18

alpha decay

Answer 18

226 222 4
Ra= Rn + He
88 86 2

Question 19

beta decay

Answer 19

234 0 234
Th= e + Pa
90 -1 91

Question 20

gamma emission

Answer 20

238 0 4 234
U= g + He + Th
92 0 2 90

Question 21

positron emission

Answer 21

15 0 15
O= e + N
8 +1 7