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Chemistry Semester 1 Review Flashcards | StudBud
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Chemistry Semester 1 Review
Chemistry Semester 1 Review
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Chemistry review for the first semester in general chemistry. #chemistry #review
Flashcards
71 cards
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Questions
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Answers
1
What is the SI unit for mass?
kilograms
meter
liter
pounds
2
What type of radiation is not a particle?
Beta
Gamma
Alpha
Positron
3
Which subatomic particle has a charge of +1?
electon
proton
none of them
neutron
4
Which of the following has a larger atomic radius?
Sr
Ca
Rb
K
5
How many neutrons are in O-18?
10
18
8
16
6
What is the correct noble gas configuration for silicon?
[Ne]3s23p2
[Ne]3s23p4
[Ar]3s23p4
[Ar]3s23p2
7
Which element will gain an electron to become an ion?
Mg
Ga
S
Rb
8
Which of the following numbers is written correctly?
10.47x10-1
0.57x105
4.348x10-4
9
Alkali metals will gain/lose how many electrons to become a noble gas?
gain 1 electron
gain 2 electrons
lose 1 electron
lose 2 electrons
10
What is the oxidation number of an boron atom?
+3
+5
-3
+13
11
Which of the following are
NOT
examples of a physical property?
pH
boiling point
density
color
12
Is the time it takes you to get to class a quantitative or qualitative measurement?
qualitative
quantitative
13
What is the density of an object that has a mass of 4.5 grams and a volume of 12 cm
3
?
2.7 g/cm3
0.38 g/cm3
54 g/cm3
14
Which of the following is a compound?
Arsenic
Bromine
Zirconium
Water
15
Describe the picture as either accurate, precise, both, or neither.
Accurate but not precise
Both
precise but not accurate
Neither
16
The number of neutrons + the number of protons tells us what about the atom?
identity
atomic mass
number of electrons
atomic number
17
What type of radiation has this symbol?
Gamma
Alpha
Beta
18
An important result of Rutherford's experiments with gold foil was to establish that
atoms have mass
that atom is mostly empty space
electrons have a negative charge
neutrons are uncharged particles
19
What scientist discovered the electron using a cathode ray tube?
Niehls Bohr
John Dalton
Ernest Rutherford
J. J. Thompson
20
How many milliliters are in this graduated cylinder?
37
36
36.75
36.7
21
What is the smallest particle of an element that retains the property of that element?
neutron
proton
atom
electron
22
What does this symbol mean?
Corrosive
Explosive risk
Health Hazard
Environmental Risk
23
Which of the following is an EXTENSIVE property
Density
Boiling point
Mass
Reactivity
24
How many protons are in an element of cobalt?
32
27
54
12
25
How many sub-levels are there in the 4th energy level?
2
4
8
3
26
What would go in place of the letter A?
Elemental Symbol
Charge
Atomic number
Mass Number
27
Does taking notes help improve your score on your test? What would the independent variable be?
taking notes
number of students
grade on the test
whether or not you like your teacher
28
Light is emitted when...
an electron goes from an excited state to ground state
when a proton goes from the excited state to ground state
when a proton goes from ground state to an excited state
an electron goes from ground state to excited state
29
What color has the smallest wavelength?
orange
blue
violet
yellow
30
What type of radiation is the smallest particle?
Beta
Alpha
Gamma
31
Which rule states that e
-
must fill the lower energy sub-levels before higher energy orbitals?
Hund's Rule
Molewards says so
Pauli's Exclusion Principle
Aufbau Principle
32
Which of the following is a correct orbital diagram?
A
D
C
B
33
What was the order of atomic models?
Quantum, Pudding, Planetary, Sphere
Sphere, Pudding, Quantum, Planetary
Sphere, Pudding, Planetary, Quantum
Sphere, Quantum, Pudding, Planetary
34
What is the least penetrative type of radiation?
Beta
Alpha
Gamma
35
What is the difference between isotopes?
# of neutrons
# of protons
# of electrons
36
How many neutrons are present in an atom of tin, atomic number = 50, mass number = 119?
69
119
169
50
37
Which of the following is a liquid at room temperature?
Hg
F
Au
Kr
38
Which of the following is a characteristic of a metal?
all of the answers
luster
ductile
malleable
39
Which sub-level can hold 10 electrons?
d
s
f
p
40
What is chemistry?
All of the answers.
Branch of Science dealing with the interactions of matter
The Class I am in right now.
My favorite subject ever.
41
What type of radiation is represented by The letter C?
Gamma
Beta
Alpha
42
What is the process called when a solid object goes directly to being a gas?
sublimation
deposition
melting
boiling
43
What type of Radiation has this symbol?
Beta
Alpha
Gamma
44
A metal sample has a mass of 45.65 g. The volume is 16.9 cm
3
. The density of the sample is
0.37 g/cm3
2.70 g/cm3
2.7 g/cm3
0.370 g/cm3
45
Which of the following measurements contains three significant figures?
200 mL
20.2 mL
200.0 mL
0.02 mL
46
How many electrons are in xenon?
185
77
131
54
47
What is the best measurement for this balance?
215.49
215
215.5
215.4
48
Which of the following is the largest unit conversion?
kilometer
decimeter
dekameter
meter
49
What is the shape of a p-orbital?
peanut
sphere
dumbell-donut
flower petals
50
Which atom has more neutrons: argon-40 or potassium-40 and how many neutrons does it have?
argon-40; 18 neutrons
potassium-40; 19 neutrons
argon-40; 22 neutrons
potassium-40; 21 neutrons
51
What type of radiation is represented by The letter B?
Alpha
Beta
Gamma
52
Calculate using significant figures: 52.03 x 0.041 =
2
2.13
2.1
2.133
53
How many significant digits does 0.08705000 have?
3
9
7
6
54
Which of the following elements has 5 valence electrons?
Arsenic
Potassium
Krypton
Aluminum
55
What is the correct answer to this problem? (SIG FIGS)
1,769,567.6
1,769,567.604
1,770,000
1,769,000
56
What type of radiation is represented by The letter A?
Gamma
Beta
Alpha
57
Which of the following are isotopes?
Co-56 & Cu-56
C-12 & C-14
Pb-224 & Sb-224
N-14 & O-14
58
What type of decay has happened here? (Honors)
Gamma
Beta
Positron
Alpha
59
Chemical equations must be balanced because....
matter cannot be destroyed. only rearranged
law of conservation of matter
My teacher wants to make my life difficult
Chemistry is hard
60
The accuracy of a measurement
is how close it is to the true value
indicates the the measurement is also precise
is something that scientists rarely achieve
does not depend on the instrument used to measure the object
61
Which element has the electron configuration 1s
2
2s
2
2p
6
3s
1
?
lithium
sodium
potassium
magnesium
62
Which of the following is a chemical change?
crushing
phase change
dissolving
oxidization
63
Which element has the noble gas notation [Kr]5s
2
4d
2
?
Zr
Se
Sr
Mo
64
Sally decides to start a fire in her fireplace. The firewood is undergoing a....
physical change
chemical change
physical property
chemical property
65
Which of the following describes a Group 18 element?
Alkaline Earth Metal
Noble Gas
Alkali Metal
Halogen
66
How many electrons can be in one orbital?
10
6
1
2
67
Write lead-204 using the correct symbol.
20482Pb
82122Pb
82204Pb
20482PB
68
We know that air is a mixture, not a compound because
it can be compressed to a smaller volume.
its composition can vary.
it is colorless.
it can be heated to a higher temperature.
69
Which of the following are in the nucleus?
electron
neutron
proton
proton and neutron
70
All measurements in science
must be expressed in scientific notation.
have some degree of uncertainty.
must include only those digits that are known with certainty
are both accurate and precise.
71
What is
NOT
part of the scientific method?
Change my data to fit my hypothesis
Formulate a Hypothesis
Make observations
Draw a conclusion
