Here follows one hypothetical example from each section of the
exam.
SHORT ANSWER Answer the following
questions in the space provided.
1. _____ Technological development of a
chemical product often.
(a) lags behind basic research on the same
substance.
(b) does not involve chance discoveries.
(c) is driven by curiosity.
(d) is done for the sake of learning
something new.
2. SHORT ANSWER Answer the
following questions in the space provided.
1. A horizontal row of elements in the
periodic table is called a(n) _______________.
2. The symbol for the element in Period 2,
Group 13, is _______________.
3. Elements that are good conductors of
heat and electricity are _______________.
4. Fill in the blanks: The value of the
acceleration of an object moving at constant velocity is ___.
5. Within the same period
of the periodic table, how do the properties of elements close to each other
compare with the properties of elements far from each other?
Performance
Expectation PS2.1
Measurements in
Experiments
|
Power
|
Prefix
|
Abbreviation
|
|
Power
|
Prefix
|
Abbreviation
|
|
10-18
|
atto-
|
a
|
|
10-1
|
deci-
|
d
|
|
10-15
|
femto-
|
f
|
|
101
|
deka-
|
da
|
|
10-12
|
pico-
|
p
|
|
103
|
kilo-
|
k
|
|
10-9
|
nano-
|
n
|
|
106
|
mega-
|
M
|
|
10-6
|
micro-
|
m
|
|
109
|
giga-
|
G
|
|
10-3
|
milli-
|
m
|
|
1012
|
tera-
|
T
|
|
10-2
|
centi-
|
c
|
|
1015
|
peta-
|
P
|
|
|
|
|
|
1018
|
exa-
|
E
|
1. How
many picoseconds are there in 1 Ms? ____________________________
2. How
many micrograms make 1 kg?
_________________________________
3. How
many nanometers are there in 1 cm?
____________________________
2.
Complete the table below by filling in the spaces with correct names or
symbols.
|
Name of element
|
Symbol of element
|
|
Aluminum
|
Al
|
|
Calcium
|
Ca
|
|
Manganese
|
Mn
|
|
Nickel
|
Ni
|
|
Potassium
|
K
|
|
Cobalt
|
Co
|
|
Silver
|
Ag
|
|
Hydrogen
|
H
|
SHORT ANSWER Answer the
following questions in the space provided.
1. A
horizontal row of elements in the periodic table is called a(n)
_______________.
2. The
symbol for the element in Period 2, Group 13, is _______________.
3. Elements
that are good conductors of heat and electricity are _______________.
4. Elements
that are poor conductors of heat and electricity are _______________.
5. A
vertical column of elements in the periodic table is called a(n)
_______________.
6. The
ability of a substance to be hammered or rolled into thin sheets is called
_______________.
7. Is an
element that is soft and easy to cut cleanly with a knife likely to be a metal
or a nonmetal? _______________.
8. The
elements in Group 18, which are generally unreactive, are called
_______________.
9. At
room temperature, most metals are _______________.
10. Name
three characteristics of most nonmetals.
DEFINE
THE FOLLOWING
organic
chemistry, analytical chemistry, biochemistry, theoretical chemistry
basic research, applied research, or technological development
Q.Consider
the burning of gasoline and the evaporation of gasoline. Which process
represents a chemical change and which represents a physical change? Explain
your answer.
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
7. Describe
the difference between a heterogeneous mixture and a homogeneous mixture, and
give an example of each.
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
8. Construct a concept map that includes the
following terms: atom, element, compound, pure substance, mixture, homogeneous,
and heterogeneous.
1.
Define “mole”.
2)
How many moles are present in 34
grams of Cu(OH)2?
3) How many moles are present in 2.45 x 1023
molecules of CH4?
4) How many grams are there in 3.4 x 1024 molecules
of NH3?
5) How much does 4.2 moles of Ca(NO3)2
weigh?
Calculate
the molar masses of the following chemicals:
1) Cl2
2) KOH
3) BeCl2
4) FeCl3
5) BF3
Find the percent compositions of all of
the elements in the following compounds:
1) CuBr2 Cu: ___________ Br: ___________
2) NaOH Na:
___________ O: ___________ H:
___________
3) (NH4)2S N: ___________H: ___________S:
___________
4) N2S2 N:
___________S: ___________
5) KMnO4
K: ___________Mn: ___________O:
___________
Balancing
equations
1) ____
Na3PO4 + ____ KOH à
____ NaOH + ____ K3PO4
2) ____
MgF2 + ____ Li2CO3 à
____ MgCO3 + ____ LiF
3) ____ P4 + ____ O2 à ____ P2O3
4) ____ RbNO3 + ____ BeF2 à ____ Be(NO3)2 + ____ RbF
5) ____ AgNO3 + ____ Cu à ____ Cu(NO3)2 + ____ Ag
6) ____ CF4 + ____ Br2 à ____ CBr4 + ____ F2
7) ____
HCN + ____ CuSO4 à
____ H2SO4 + ____ Cu(CN)2
8) ____
GaF3 + ____ Cs à
____ CsF + ____ Ga
9) ____
BaS + ____ PtF2 à
____ BaF2 + ____ PtS
10) ____
N2 + ____ H2 à
____ NH3
Choose
the best answer
The number of
significant figures in the measurement 170.040 km is
a. three.
b. four.
c. five.
d. six.
_____ . The dimensions of rectangular solid are
measured to be 1.27 cm,
1.3 cm, and 2.5 cm. The volume should be recorded as
1.3 cm, and 2.5 cm. The volume should be recorded as
a. 4.128 cm3.
b. 4.12 cm3.
c. 4.13 cm3.
d. 4.1 cm3.
_____ . Samples with masses of 0.12 g, 1.8 g, and 0.562
g are mixed together. The combined mass of the three samples, expressed to the
correct number of significant figures, should be recorded as
a. 2.4 g.
b. 2.48 g.
c. 2.482 g.
d. 2.5 g.
_____ . Expressed in scientific notation, 0.0930 m is
a. 93 ´ 10-3 m.
b. 9.3 ´ 10-3 m.
c. 9.30 ´ 10-2 m.
d. 9.30 ´ 10-4 m.
_____ . When 6.02 ´ 1023 is multiplied by 9.1 ´ 10-31, the product is
a. 5.5 ´ 10-8.
b. 5.5 ´ 1055.
c. 5.5 ´ 10-7.
d. 5.5 ´ 10-53
SHORT ANSWER Answer the
following questions in the space provided.
1. Write empirical formulas to match the following
molecular formulas:
__________________ a. C2H6O4
__________________ b. N2O5
__________________ c. Hg2Cl2
__________________ d. C6H12
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