Exam I

Question 1

Intensive Property-2 Examples

Answer 1

Color, density, odor, melting point, etc. (any physical property that does not depend on sample size).

Question 2

Extensive Property

Answer 2

Size, volume, mass, weight, etc. (any physical property that does depend on sample size).

Question 3

Protons, Neutrons and Electrons in W-184

Answer 3

74 protons
110 neutrons
74 electrons

Question 4

BaCl2 . 2H2O

Answer 4

A hydrate

Question 5

Halogen-Example

Answer 5

F, Cl, Br, I

Question 6

Representative Element-Example

Answer 6

Any element in Groups IA through VIIIA.

Or using the newer designation, any element in Groups 1,2,13-18.

Question 7

Period 5 Element-Example

Answer 7

Rb through Xe

Question 8

Metalloid-Example

Answer 8

B, Si, Ge, As, Sb, Te, Po, At

Question 9

How many electrons does Ni^2+ contain

Answer 9

26 electrons

Question 10

Greek Prefixes

Answer 10

mono=1            hexa=6
di=2                  hepta=7
tri=3                  octa=8
tetra=4              nona=9
penta=5            deca=10

Question 11

Prefixes and their value

Answer 11

giga= 10^9 (G)
mega= 10^6 (M)
kilo= 10^3 (k)
deci= 10^-1 (d)
centi= 10^-2 (c)
milli= 10^-3 (m)
micro= 10^-6 (u)
nano= 10^-9 (n)
pico= 10^-12 (p)

Question 12

Prefixes and their value

Answer 12

giga= 10^9 (G)
mega= 10^6 (M)
kilo= 10^3 (k)
deci= 10^-1 (d)
centi= 10^-2 (c)
milli= 10^-3 (m)
micro= 10^-6 (u)
nano= 10^-9 (n)
pico= 10^-12 (p)

Question 13

Charge on the cobaltic ion

Answer 13

+3

Question 14

Charge on the plumbous ion

Answer 14

+2