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Chemistry Semester 1 Review
SI (metric) prefix for 1000 :
SI (metric) prefix for 1/1000 :
Chemistry Semester 1 Review
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1
SI (metric) prefix for 1/1000 :
centi-
milli-
micro- (μ)
Kilo-
2
SI (metric) prefix for 1000 :
centi-
milli-
Kilo-
micro- (μ)
3
For our studies in Chemistry, the three most important parts of the
Electromagnetic Spectrum
are :
Gamma, Vis, IR
x-rays, UV, IR
UV, IR, microwaves
UV, Vis, IR
4
Which may be the most
important
step of the
Scientific Method
?
Experimenting & Analysis
Hypothesizing
Communicating results
Questioning
5
Number of Significant Figures : 0.010
4
2
1
3
6
Number of Significant Figures : 10.01
1
2
3
4
7
Number of Significant Figures : 10.0
3
2
1
4
8
Number of Significant Figures : 1.00
2
4
1
3
9
SI (metric) prefix for one-millionth :
micro- (μ)
centi-
milli-
Kilo-
10
Isotopes
of an element :
Have the same atomic number
Have different numbers of electrons
Are radioactive
Have the same mass number
11
Volume is :
Three-dimensional
Both B & C
A derived measurement
A basic measurement
12
Which set of arrows indicates an inverse relationship?
↑↓
↑↑
↓↓
13
Number of Significant Figures : 0.01
1
2
3
4
14
Any given orbital can hold up to :
2 electrons
4 electrons
1 electron
3 electrons
15
What two forces are in competition in the nucleus?
Gravitation and Strong Nuclear
Strong Nuclear and Electrostatic
Weak Nuclear and Strong Nuclear
Electrostatic and Gravitation
16
10
10
× 10
-3
= ?
1030
10-30
107
1013
17
Density is:
A basic measurment
Mass / Volume
Both B & C
A derived measurement
18
A distance measurement cubed is :
Distance x 3
Volume
Density
Area
19
If your measurements are close together, then they are :
Accurate and Precise
Can't tell
Accurate
Precise
20
Which is
NOT
indicative of an earth-bound nuclear reaction ?
Beta (β) emission
Gamma rays
Alpha (α) decay
X rays
21
Which
does NOT
help to ensure world-wide understanding of science :
Use of the Periodic Table
Use of math
Reporting results to friends
Use of the Scientific Method
22
A distance measurement squared is :
Density
Distance x 2
Volume
Area
23
Number of Significant Figures : 6.022 x 10
23
2
1
4
3
24
The
Aufbau principle
says :
Electrons start filling orbitals with the highest energy level first
Electrons start filling orbitals with the lowest energy level first
25
If ₵oinium had an atomic number of 4, which isotope is likely to be radioactive?
₵-10
₵-12
₵-8
26
SI (metric) prefix for 1/100 :
milli-
micro- (μ)
centi-
Kilo-
27
The word "
atom
" originated from :
Democritus
Dalton
Lavoisier
Einstein
28
An
Hypothesis
is :
An explanation of a relationship
An educated guess about a relationship
An observed relationship
29
Which one
IS
a basic measurement ?
mol
Pascal
g / mL
Joule
30
As Frequency increases :
Wavelength increases; Energy increases
Wavelength decreases; Energy decreases
Wavelength increases; Energy decreases
Wavelength decreases; Energy increases
31
Which number properly expresses 1.0 mg ?
1.0 g x 10-3
100 μg
10 x 10-4 g
1.0 x 10-3 g
32
Isotopes
of an element :
Have the same number of nucleons
Have the same number of protons
Have the same number of neutrons
Have the same mass number
33
Credibility (truthfulness) of your sources of information can be judged by:
The process by which the "facts" were obtained
The "facts" presented and the process to get those "facts"
The "facts" presented
The "sources" quoted in your source
34
Temperature is :
A basic measurement
A derived measurement
35
As an analogy, we can think of
Hund's Rule
as :
Classrooms in the building
Doors to a room
Cups on the counter
Seats on a bus
36
The
Law of Definite Proportions
states that :
Elements combine in whole-number ratios
Elements combine in fractional number ratios
37
Which one is
NOT
a basic measurement ?
Distance
Mass
Amount of substance
Energy
38
Nuclear fission
results in :
Heavier nuclei
Lighter nuclei
39
The originator of our modern atomic theory was :
Lavoisier
Einstein
Democritus
Dalton
40
If the average of your measurements is close to the true value but the individual measurements are not close :
Accurate but not Precise
Accurate and Precise
Precise but not Accurate
41
10
10
÷ 10
-3
= ?
1030
1013
107
10-30
42
Which of our modern devices is an example of the
photoelectric effect
in action?
Touchscreen computer
cellphone camera
computer chips
cell phone
43
A
Scientific Law
is :
An educated guess about a relationship
An explanation of a relationship
An observed relationship
44
Which is a
chemical
change ?
Toasting bread
Ice melting
Sugar dissolving in water
Water evaporating
45
Radioactivity indicates that:
there are more neutrons than protons.
there are different isotopes of this element.
the nucleus is stable.
the nucleus is unstable.
46
A
Scientific Theory
is :
An explanation of a relationship
An educated guess about a relationship
An observed relationship
47
The
Law of Multiple Proportions
says :
Same ingredients; same proportions = same products
Same ingredients; same proportions = different products
Same ingredients; different proportions = different product
Same ingredients; different proportions = same product
48
The
Pauli exclusion principle
can be reduced to :
2 electrons in same orbital must have the same spins (quantum number)
2 electrons in same orbital must have opposite spins (quantum number)
49
The first element where electrostatic repulsion overpowers the strong force is :
Po (polonium)
Bi (bismuth)
Radioactive
Both C & D
50
Scientific Notation - which one is proper?
1.0 x 103
0.10 x 103
- 10 x 103
10 x 103
51
A scientist's background may influence their practice of science.
False
True
52
Conversion Factors
are constructed as :
FROM / TO
TO / FROM
mL / g
g / cm3
53
The
Law of Conservation of Mass
was demonstrated by :
Democritus
Einstein
Lavoisier
Dalton
54
A
mole
of things is :
6 × 1023 things
6.022 × 1032 things
6.0 × 1023 things
6.022 × 1023 things
55
Nuclear fusion
results in :
Lighter nuclei
Heavier nuclei
56
A medical study where neither the experimenter nor the subject are aware of the active treatment is called :
Covered Treatment
Hidden Treatment
Double-blinded
Blinded
57
Hund's Rule
states that electrons will fill equal-energy orbitals :
2 in the first orbital, then 2 in the second orbital, etc ...
1 in the first orbital, then 1 in the second orbital, etc ... before 2
58
A useful example of the
photoelectric effect
can be found in :
Digital clock
A touchscreen
Cellphone camera
Television
59
If the same two elements combine in different ratios, they are exhibiting :
Law of Multiple Proportions forming the same substance(s)
Law of Definite Proportions forming different substance(s)
Law of Multiple Proportions forming different substance(s)
Law of Definite Proportions forming the same substance(s)
60
When graphing experimental results, which is the appropriate axis for each variable?
X: Dependent / Y: Independent
X: Independent / Y: Dependent
