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Chemistry MIDTERM Review - Whiteman Flashcards | StudBud
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Chemistry MIDTERM Review - Whiteman
Chemistry MIDTERM Review - Whiteman
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Chemistry review for the first semester in general chemistry. #chemistry #review
Flashcards
46 cards
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Practice quiz
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Questions
46
Answers
1
Which of the following is a liquid at room temperature?
F
Hg
Au
Kr
2
Write lead-204 using the correct symbol.
20482Pb
20482PB
82204Pb
82122Pb
3
Which of the following is an EXTENSIVE property
Density
Boiling point
Mass
Reactivity
4
Which of the following is a chemical change?
crushing
oxidization
dissolving
phase change
5
How many electrons are in a double bond?
8
2
4
1
6
What is the process called when a solid object goes directly to being a gas?
sublimation
boiling
deposition
melting
7
What scientist discovered the electron using a cathode ray tube?
Niehls Bohr
J. J. Thompson
Ernest Rutherford
John Dalton
8
How many electrons can be in one orbital?
2
6
10
1
9
Describe the picture as either accurate, precise, both, or neither.
precise but not accurate
Neither
Both
Accurate but not precise
10
The number of neutrons + the number of protons tells us what about the atom?
identity
number of electrons
atomic mass
atomic number
11
What is
NOT
part of the scientific method?
Draw a conclusion
Formulate a Hypothesis
Make observations
Change my data to fit my hypothesis
12
Which of the following is an exothermic process?
freezing
boiling
sublimation
melting
13
What is the shape of a p-orbital?
dumbell-donut
cloverleaf
sphere
dumbell
14
Does taking notes help improve your score on your test? What would the independent variable be?
grade on the test
taking notes
whether or not you like your teacher
number of students
15
What is the difference between isotopes?
# of neutrons
# of electrons
# of protons
16
How many milliliters are in this graduated cylinder?
36.75
36.7
36
37
17
Which rule states that e
-
must fill the lower energy sub-levels before higher energy orbitals?
Aufbau Principle
Hund's Rule
Pauli's Exclusion Principle
Mrs. Whiteman says so
18
Which of the following are
NOT
examples of a physical property?
color
pH
density
boiling point
19
How many protons are in an element of cobalt?
54
12
27
32
20
Alkali metals will gain/lose how many electrons to become a noble gas?
gain 2 electrons
gain 1 electron
lose 1 electron
lose 2 electrons
21
How many electrons are in xenon?
77
54
185
131
22
How many atoms are there in 2CuSO
4
?
8
12
6
7
23
Which of the following elements has 5 valence electrons?
Potassium
Aluminum
Arsenic
Krypton
24
What is the smallest particle of an element that retains the property of that element?
neutron
proton
electron
atom
25
Which of the following is a characteristic of a metal?
malleable
luster
ductile
all of the answers
26
What is the density of an object that has a mass of 4.5 grams and a volume of 12 cm
3
?
54 g/cm3
0.38 g/cm3
2.7 g/cm3
27
Which of the following are in the nucleus?
electron
proton
neutron
proton and neutron
28
What is the oxidation number of an boron atom?
+5
+13
-3
+3
29
What is the correct noble gas configuration for silicon?
[Ne]3s23p2
[Ne]3s23p4
[Ar]3s23p4
[Ar]3s23p2
30
Which of the following has a polar covalent bond?
FeCl2
H2O
O2
MgBr
31
Which element will gain an electron to become an ion?
Rb
Mg
Ga
S
32
Which element has the electron configuration 1s
2
2s
2
2p
6
3s
1
?
potassium
magnesium
lithium
sodium
33
How many neutrons are in O-18?
8
16
18
10
34
What is chemistry?
The Class I am in right now.
All of the answers.
Branch of Science dealing with the interactions of matter
My favorite subject ever.
35
Which of the following are isotopes?
Pb-224 & Sb-224
Co-56 & Cu-56
C-12 & C-14
N-14 & O-14
36
Which of the following numbers is written correctly?
4.348x10-4
10.47x10-1
0.57x105
37
What are the correct coefficients to balance this equation? C
2
H
6
+O
2
→ CO
2
+ H
2
O
2,1,2,3
2,7,4,6
2,3,2,3
4,6,8,12
38
Which sub-level can hold 10 electrons?
f
d
s
p
39
Which of the following is a compound?
Arsenic
Water
Bromine
Zirconium
40
Which of the following has a larger atomic radius?
K
Ca
Sr
Rb
41
What is the correct formula for cobalt (II) hydroxide?
Co2OH
CH2
CoOH2
Co(OH)2
42
Light is emitted when...
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
an electron goes from an excited state to ground state
43
How many sub-levels are there in the 4th energy level?
4
2
3
8
44
What is the formula for potassium nitrate?
KNO2
KN3O2
K2NO
KNO3
45
Sally decides to start a fire in her fireplace. The firewood is undergoing a....
physical change
chemical property
chemical change
physical property
46
Chemical equations must be balanced because....
Chemistry is hard
matter cannot be destroyed. only rearranged
law of conservation of matter
My teacher wants to make my life difficult
