chapter 2 review

Question 1

average atomic mass

Answer 1

f1m1 + f2m2

Question 2

isotopes

Answer 2

number of neutrons vary in an atom, but don’t change the mass

Question 3

atomic number

Answer 3

number of protons

Question 4

atomic mass

Answer 4

number of neutrons + protons

Question 5

anion

Answer 5

gaining electrons (-)

Question 6

cation

Answer 6

losing electrons (+)

Question 7

oxyanion

Answer 7

combo of an element and oxygen
most number of O: per-name-ate
second O: name-ate
third O: name-ite
least O: hypo-name-ite

Question 8

binary acids

Answer 8

hydrogen and non metal
hydro-base-ic acid

Question 9

oxyacid

Answer 9

hydrogen and oxyanion
name oxyanion- ic/ous acid
ate=ic
ite=ous

Question 10

alkanes

Answer 10

carbon and hydrogen in single bonds
prefix (number of C) end in ane

Question 11

meth

Answer 11

1

Question 12

eth

Answer 12

2

Question 13

prop

Answer 13

3

Question 14

but

Answer 14

4

Question 15

pent

Answer 15

5

Question 16

hex

Answer 16

6

Question 17

hept

Answer 17

7

Question 18

oct

Answer 18

8

Question 19

non

Answer 19

9

Question 20

dec

Answer 20

10

Question 21

undec

Answer 21

11

Question 22

dodec

Answer 22

12

Question 23

alchols

Answer 23

carbon and hydrogen plus -OH group at the end
prefix and end in -anol

Question 24

carboxylic acids

Answer 24

carbon and hydrogens ending with -COOH
prefix and end in -anoic acid

Question 25

molar mass

Answer 25

mass of all atoms of an element added together

Question 26

Avogadro’s number

Answer 26

6.022x10^23

Question 27

1amu=

Answer 27

g/mol

Question 28

percent composition

Answer 28

(# of element)*(atomic mass)/ (molar mass) x100

Question 29

empirical formula

Answer 29

compound’s formula divided by the lowest denominator

Question 30

diatomic elements

Answer 30

Br2, I2, N2, Cl2, O2, F2