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CP Chem Midterm Review
CP Chem Midterm Review
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Flashcards
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Questions
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Answers
1
group 2 are known as
alkaline earth metals
halogens
alkali metals
noble gasses
2
If the mass of Nitrogen is 14.0067 amu which is the most abundant isotope of nitrogen
N-13
N-15
N-14
3
how many sig figs in 2.24 x 10
64
2
67
64
3
4
to separate liquids using distillation they must have
low boiling points
high boiling points
same boiling points
different boiling points
5
When atoms lose electrons they become
both 1&2 are correct
anions
cations
positive
6
BeCl
2
is
Ternary
Binary
7
Which did Dalton not discuss in his atomic theory?
All of the above
Neutrons and Electrons
Protons
Isotopes
8
a pure substance is
mixture
both elements and compounds
compound
element
9
__________ is found by measuring half the distance of neighboring nuclei
ionization energy
ionic size
atomic size
electronegativity
10
Write 560,000 in proper scientific notation
5.6 x 105
5.6 x 10-5
.56 x 10-7
56 x 106
11
orange juice is ....
solution
compound
an element
mixture
12
Why do atoms form bonds
Both 1 & 2 are correct
None of the above
to have more stable energy levels like the noble gases
to reduce potential energy
13
sugar is an
element
mixture
solution
compound
14
group 18 elements are also known as
alkaline earth metals
alkali metals
noble gases
halogens
15
When an atom gains an electron
none of the above
It becomes an anion
it is neutral
it becomes a cation
16
The fundamental unit for mass in the metric system is the
liter
second
meter
gram
17
non metals are found
to the left of the staircase
non of the above
along the staircase
to the right of the staircase
18
greek philosopher credited with the death of chemistry
Democritus
Dalton
Rutherford
Aristotle
19
name the compound Al
2
O
3
Aluminium Hydroxide
Aluminum Oxygenide
Aluminum Oxide
Oxygen Alumenide
20
A student finds densities: 2.01 g/mL, 2.05 g/mL, 1.99 g/mL. what is the avg. density?
6.73 g/mL
2.02 g/mL
21
using sig fig rules and a calculator solve 3.152 m + 52 m
55.2 m
55.152 m
55 m
22
The mass of an electron is
0 amu
1 amu
23
calculate % error using the avg from Q47. accepted value 2.12g/mL
4.95%
.0472%
47.2%
4.72%
24
how many protons, neutrons and electrons in Br-80
35, 35 & 35
35, 45, & 35
35, 35 & 45
25
Representative elements are found on blocks
d & f
p & d
s & f
s & p
26
which metric prefix designates 1/1,000
d
c
m
k
27
coca cola is
compound
mixture
element
solution
28
which of the following elements is a non metal?
Ge
Hg
Fe
Ca
29
NH
4
OH is
Ternary
Binary
30
Rows on the periodic table are
groups/families
periods
31
metals are found
to the left of the staircase
to the right of the staircase
along the staircase
none of the above
32
the abundance of Li-7 is 90% & Li-6 is 10% . What is the average atomic mass of Li?
6.9 amu
6.7 amu
6.5 amu
7 amu
33
How many oxygen are in Al
2
(SO
4
)
3
1
12
2
3
34
The fundamental unit of length in the metric system is the
gram
meter
second
liter
35
a liquid has a mass of 356 g and a volume of 50mL. What is its density?
7.12 g/mL
12.8 g/mL
12,800 g/mL
712 g/mL
36
How many Aluminum are in Al
2
(SO
4
)
3
12
1
2
3
37
Discovered the electron with a cathode ray
Dalton
Rutherford
Aristotle
Thomson
38
which metric prefix designates 1,000
c
k
m
M
39
examples of qualitative measurements
color
answers 1 & 2
temperature
pressure
40
Write the formula for Calcium Hydroxide
Ca(OH)2
CaOH
CaOH2
41
quantitative measurements describe matter using _____________
hardness
numbers
size
color
42
Write the formula for Calcium Selenide
CaS
CaS2
CaSe2
CaSe
43
columns on the periodic table are
groups/families
periods
44
how many sig figs in .000589
5
4
6
3
45
greek philosopher proposed matter was made up of tiny particles "atomos"
Dalton
Aristotle
Democritus
Rutherford
46
what is the name and mass number of an element with 15 protons, 15 electrons and 20 neutrons
phosphorus ; 35
Nitrogen; 15
Calcium; 20
phosphate; 30
47
name the compound Al
2
(SO
4
)
3
aluminum sulfite
aluminum sulfide
aluminum sulfate
ammonium sulfate
48
How many sig figs in 50200
5
2
3
49
The fundamental unit of time in the metric system is the
meter
second
liter
gram
50
which metric prefix designates 1/1,000,000,000
n
k
p
m
51
name the compound Na
3
(PO
4
)
Sodium Phosphite
Sodium Polonide
Sodium Phosphate
Sodium Phosphide
52
discovered the nucleus with the gold foil experiment
jj thomson
Rutherford
Aristotle
Einstein
53
the anion form of an atom is
smaller
same size
larger
none of the above
54
are the results from Q47 accurate, precise or neither
precise
accurate
neither
both accurate and precise
55
How many sig figs in 502.00
2
5
3
56
The fundamental unit of volume in the metric system is the
meter
liter
gram
second
57
which metric prefix designates 1,000,000
c
k
m
M
58
stated that atoms of the same element are alike, but different from other elements
Democritus
Rutherford
Dalton
jj thomson
59
The mass of a neutron
1 amu
0 amu
60
which groups are transition metals?
groups 13-18
groups 1&2
groups 3-12
f-block elements
61
The mass of a proton
1 amu
0 amu
62
properties of metals are:
all of the above
malleable
ductile
lustrous
63
group 1 are known as
noble gases
alkali metals
alkaline earth metals
halogens
64
write 0.00123 x 10
-2
in proper scientific notation
12.3 x 10-6
.123 x 10-5
1.23 x 10-5
1.23 x 105
65
How would you separate sugar and sand?
filter the sand from the sugar water
none of the above
both answers 1 & 2
use water to dissolve the sugar
66
The cation form of an atom is
non of the above
larger
same size
smaller
67
Iron is
compound
mixture
solution
element
68
non metals are
all of the above
poor conductors
brittle
dull
69
metalloids are found
to the left of the staircase
along the staircase
to the right of the staircase
non of the above
70
group 17 elements
alkali metals
halogens
noble gases
alkaline earth metals
71
All compounds containing polyatomic ions are ternary
True
False
72
Write the formula for Chromium (VI) Phosphate
Cr(PO4)3
CrP3
Cr3P6
Cr3(PO4)6
73
The density of a material depends on ___________.
weight
mass
volume
mass and volume
74
Solve using sig fig rules and a calculator 2.230 g × 6.3155 g
14.084 g
14.083565 g
14.0836 g
14.08 g
75
convert 25 ML to mL
2.5 x 1010 mL
25 x 109 mL
250 mL
76
write 0.00156 in proper scientific notation
1.56 x 103
1.56 x 10-3
1.56
77
salt can be broken down into Na and Cl; salt is an example of
mixture
compound
an element
solution
78
How would you separate a mixture of dirt and iron filings
pick out by hand
distillation
magnet
filter
79
How many sulfur are in Al
2
(SO
4
)
3
2
3
12
1
80
name the compound Fe
2
(SO
3
)
3
Iron (II) Sulfite
Iron (II) Sulfate
Iron Sulfate
Iron (III) Sulfite
