ECU CHEM 1120 Dr. Dutta Final Exam Study Guide | Chemistry Review, Key Concepts &
Practice Questions
Define physical property - correct answer ✔✔a characteristic that can be observed without
changing the chemical structure
Define chemical property - correct answer ✔✔a characteristic of a substance that describes the
way something undergoes a chemical change
O - correct answer ✔✔Oxygen
C - correct answer ✔✔Carbon
N - correct answer ✔✔Nitrogen
H - correct answer ✔✔Hydrogen
Br - correct answer ✔✔Bromine
P - correct answer ✔✔Phosphorus
Fe - correct answer ✔✔Iron
kilo - correct answer ✔✔1000
hecto - correct answer ✔✔100
,deka - correct answer ✔✔10
deci - correct answer ✔✔.1
centi - correct answer ✔✔.01
milli - correct answer ✔✔.001
micro - correct answer ✔✔10^-6
nano - correct answer ✔✔10^-9
(T or F): #'s 1-9 are always significant - correct answer ✔✔true
(T or F): Sandwiched O's are NEVER significant - correct answer ✔✔false
(T or F): Leading O's are NEVER significant - correct answer ✔✔true
(T or F): Trailing O's are only significant IF a decimal is present - correct answer ✔✔true
When you multiply and divide, what is the sig fig rule? - correct answer ✔✔Use the least
amount of sig figs
When you add and subtract, what is the sig fig rule? - correct answer ✔✔Use the least amount
of decimal places
What does density equal? - correct answer ✔✔d=m (g) / v (mL)
, Celsius to farenheit - correct answer ✔✔F=1.8(c)+32
Celsius to Kelvin - correct answer ✔✔K=273+C
Farenheit to Celsius - correct answer ✔✔C= 5/9 (F-32)
metal characteristics - correct answer ✔✔malleable element, lustruous, good conductor of heat
and electricity
nonmetal characterisitcs - correct answer ✔✔poor conductor of heat and electricity, brittle,
good insulators
Define homogeneous - correct answer ✔✔a uniform mixture that has the same composition
throughout
Define heterogeneous - correct answer ✔✔a nonuniform mixture that has regions of different
composition
The charge of a proton - correct answer ✔✔+1
The charge of a electron - correct answer ✔✔-1
The charge of a neutron - correct answer ✔✔0
The atomic number represents...? - correct answer ✔✔the number of protons
Practice Questions
Define physical property - correct answer ✔✔a characteristic that can be observed without
changing the chemical structure
Define chemical property - correct answer ✔✔a characteristic of a substance that describes the
way something undergoes a chemical change
O - correct answer ✔✔Oxygen
C - correct answer ✔✔Carbon
N - correct answer ✔✔Nitrogen
H - correct answer ✔✔Hydrogen
Br - correct answer ✔✔Bromine
P - correct answer ✔✔Phosphorus
Fe - correct answer ✔✔Iron
kilo - correct answer ✔✔1000
hecto - correct answer ✔✔100
,deka - correct answer ✔✔10
deci - correct answer ✔✔.1
centi - correct answer ✔✔.01
milli - correct answer ✔✔.001
micro - correct answer ✔✔10^-6
nano - correct answer ✔✔10^-9
(T or F): #'s 1-9 are always significant - correct answer ✔✔true
(T or F): Sandwiched O's are NEVER significant - correct answer ✔✔false
(T or F): Leading O's are NEVER significant - correct answer ✔✔true
(T or F): Trailing O's are only significant IF a decimal is present - correct answer ✔✔true
When you multiply and divide, what is the sig fig rule? - correct answer ✔✔Use the least
amount of sig figs
When you add and subtract, what is the sig fig rule? - correct answer ✔✔Use the least amount
of decimal places
What does density equal? - correct answer ✔✔d=m (g) / v (mL)
, Celsius to farenheit - correct answer ✔✔F=1.8(c)+32
Celsius to Kelvin - correct answer ✔✔K=273+C
Farenheit to Celsius - correct answer ✔✔C= 5/9 (F-32)
metal characteristics - correct answer ✔✔malleable element, lustruous, good conductor of heat
and electricity
nonmetal characterisitcs - correct answer ✔✔poor conductor of heat and electricity, brittle,
good insulators
Define homogeneous - correct answer ✔✔a uniform mixture that has the same composition
throughout
Define heterogeneous - correct answer ✔✔a nonuniform mixture that has regions of different
composition
The charge of a proton - correct answer ✔✔+1
The charge of a electron - correct answer ✔✔-1
The charge of a neutron - correct answer ✔✔0
The atomic number represents...? - correct answer ✔✔the number of protons
