Which of the following is NOT a normal property of ionic compounds?

good electrical conductivity as a solid

Which one of the following statements about theories is incorrect?

They should be accepted as established truth

The word hydrate at the end of a name with greek prefixes (ex heptahydrate) is referring to ______.

the number of water molecules present

Why do you need to know this stuff?

To be a quantum physicist, Mrs. Hambrick is making me, Because its cool, Ohio said so

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Chemistry Final 2025 Prep

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Questions 103

Answers

1
Which of the differences in electronegativity would most likely represent a bond that is the most ionic?
3.4
2.0
0.8
1.7
2
Who coined the term element?
Dalton
Dobereiner
Lavoisier
Newlands
3
190/78 Pt - How many protons are in the element?
112
78
268
190
4
Which of the following is NOT a normal property of ionic compounds?
good electrical conductivity as a solid
none of the above
high melting point
crystals that easily split
5
Which type of elements have properties of both metals and nonmetals?
metalloids
none of the above
transition metals
two of the above
6
Who said that the elements could be arranged in triads?
Newlands
Lavoisier
Dalton
Dobereiner
7
Which one of the following statements about theories is incorrect?
They help explain a body of data
They can tie together various areas of science
They should be accepted as established truth
They can be thought of as scientific models
8
The (l) in chemical equations stands for what?
licorice
light
lipstick
liquid
9
Find the percent composition of NaCl.
39% Na, 61% Cl
55% Na, 45% Cl
45% Na, 55% Cl
61% Na, 39% Cl
10
How many molecules are in 5.00 grams of CaC2?
0.0780
4.70
4.70 X10^22
7.80 x 10^22
11
The law of ___________ states that matter cannot be created or destroyed
no matter go
conservation of matter
preservation of matter
stability of matter
12
What type of formula best represents the bonds and shape of a molecule?
structural
mathematical
empirical
molecular
13
The magnetic spin (ms) number could be which of the following numbers?
1/2
1
two of the above
7
14
Which person discovered the neutron by observing neutral particles radiating from a sample hit with alpha particles?
Bohr
Thomson
None of the above
Rutherford
15
What is not true regarding models?
They are essential to chemistry
They have predictive power
They are workable
They are exact and accurate
16
The invention of the _________ by Volta opened the door to many new experiments and led to more discoveries about atoms
nuclear reactor
gas discharge tube
battery
none of the above
17
Which princple says that the ratio elements in a compound is constant for every particle in that compound?
second law of thermodynamics
law of multiple proportions
law of definite composition
law of conservation of matter
18
190/78 Pt - How many electrons are in the element?
190
268
112
78
19
Neutrons are _____ charged.
whoops
positively
negatively
neutrally
20
Which orbital looks like a dumbbell on all three axes?
p
f
d
s
21
The scale of a measuring instrument is ___________, that is accurately subdivided into measurement units.
enumerated
unitized
graduated
standardized
22
How many sigma and pi bonds are there in a molecule of N2?
1 sigma, no pi
1 sigma, 2 pi
2 sigma, 1 pi
1 sigma, 1 pi
23
190/78 Pt - The number 78 is the __________.
Mass number
two of the above
Atomic Number
Number of protons
24
Hydrogen has a _____ charge when bonded with nonmetals and a _____ charge when bonded with metals.
-2, +2
+1, -1
-1, +1
+2, -1
25
What does the triangle mean if it is above the reaction arrow?
none of the above
heated
light
place in a flask
26
____ are postively charged
neutron
proton
positron
electron
27
Who arranged the periodic table by atomic number?
Mendeleev
Rutherford
Newlands
none of the above
28
An s orbital is shaped like a ______.
dumbell with 3 axes
crazed flower in all directions.
four lead clover in all directions
sphere
29
A fraction equal to 1 that contains both the original unit and its equivalent value in a new unit is called a(n)?
derived unit
Conversion factor
exponential factor
pure number
30
Which elements ALWAYS have a +2 charge?
transition metals
alkali metals
halogens
alkaline earth metals
31
What is the oxidation number of Mg2+
-2
0
+2
+1
32
The word hydrate at the end of a name with greek prefixes (ex heptahydrate) is referring to ______.
how much water is needed to keep you healthy
the number of H atoms present
the number of water molecules present
It is made up
33
Which of the following molecules has a bent shape?
OF2
Cl2CO
CO2
NH3
34
Which part of the atom is found outside the nucleus in a "cloud"?
both n + p
neutron
electron
proton
35
________ made his atomic model after experimenting with gas discharge tubes. He found a negatively charged particle...
Thomson
Dalton
Chadwick
Rutherford
36
What is the molar mass of urea (NH2CONH2)
60.057 g/mol
123.45 g/mol
17.031 g/mol
44.034 g/mol
37
The (s) in chemical equations means that the compound is _________.
squishy
soft
a squid
a solid
38
Atoms with a different number of neutrons are known as ___________.
Nuclei
Ions
Elements
Isotopes
39
A compound contains 80.00% C and 20.00% H, what is the empirical formula of the compound?
CH3
C3H
C8H2
C4H
40
Oxygen typically has an oxidation number of what?
+1
-1
+2
-2
41
Which sublevel looks like a crazy 4 leaf clover in all directions?
p
d
f
s
42
The electron-sea theory accounts for all of the following characteristics of metals except...
luster
malleability
brittleness
conductivity
43
An orderly arrangement of ions in a 3D pattern within a compound is called a(n)
ion array
crystal unit
ionic network
crystal lattice
44
190/78 Pt - The number 190 is the _______.
Atomic number
Number of neutrons
two of the above
Mass number
45
What is the oxidation number of Br2?
-2
+1
-1
0
46
A(n) _________ system of measurement is any system of measurement based on a decimal scale.
basic
digital
metric
accurate
47
Which of the following does NOT exist as a diatomic molecule?
krypton
nitrogen
hydrogen
chlorine
48
____________ is a measure of "correctness"
moles
significant digits
accuracy
precision
49
What type of bond would you expect in a compound of bromine and sodium?
metallic
covalent
ionic
polar covalent
50
Why do you need to know this stuff?
To be a quantum physicist
Mrs. Hambrick is making me
Because its cool
Ohio said so
51
The outermost electrons are known as _________ electrons.
valence
lonely
neutral
energetic
52
___________ bonding occurs when atoms share electrons
ionic
metallic
covalent
lewis
53
An atom becomes more stable by bonding with another atom if the resulting electron configuration is more like what?
noble gases
metalloids
halogens
alkali metals
54
The compounds on the right side of the chemical equation (after the arrow) and known as the ________.
Products
Resultants
Variables
Reactants
55
The ___________ states that no two electrons can have the same 4 quantum numbers.
Pauli Exlusion Principle
Lewis Principle
Aufbau Principle
Hund's Rule
56
_________ states that all orbitals recieve one electrons with the same spin before they begin to pair up.
Pauli Exclusion Principle
Hund's Rule
Lewis Principle
Aufbau Princple
57
Which one of the below is NOT an example of matter?
Thoughts
Table
Air
Two of the above
58
In covalent binary bonding the Greek prefixes are used for the first element EXCEPT for which prefix?
tetra
di
tri
mono
59
In equations the (aq) stands for what?
aquatic
acute
acquittal
aqueous
60
_____________ electrons are the outermost electrons and help determine how atoms bond.
Shared
Ionic
Valence
Isotope
61
In which periodic trend are the noble gases excluded?
ionization energy
electronegativity
atomic radius
electron affinity
62
The principle energy level measures the ___________ of the electrons.
Electron spin
Two of the above
Energy level
Distance from the nucleus
63
The __________ mass tells how many grams of a substance are in one mole of that same substance.
empirical
molar
theoretical
actual
64
What type of bond forms as a result of orbitals overlapping end to end?
gamma
sigma
pi
delta
65
The ______ states that electrons are added to the lowest energy orbital first.
Pauli exclusion princple
Aufbau Principle
Lewis Princple
Hund's Rule
66
190/78 Pt - How many neutrons are in the element?
78
268
190
112
67
Who believed matter was continuous and could be broken down forever?
Democritus
Dalton
Aristotle
Susie
68
Which part of the atom determines what type of element an atom is?
Electron
Electron cloud
Neutron
Protons
69
The azimuthal number is based onf the probability charts, which tells the electron orbitals' ______
shape
distance from the nucleus
energy
electron spin
70
Which type of bonds are named with Greek prefixes?
covalent
ionic
lewis
metallic
71
When you see a chemical listed above the reaction arrow, it tells you that the chemical is a ____ and ____ the reaction
reactant, speeds up
catalyst, slows down
reactant, slows down
catalyst, speeds up
72
What part of the atom effects the stability of the nucleus?
Electrons
Neutrons
Protons
Quantums
73
Which of the following shapes is always polar if the central atom is different from the outside atoms?
trigonal planar
linear
tetrahedral
bent
74
What is found in the nucleus?
both p + e
both n + p
neutrons
protons
75
When no single Lewis structure can display the distribution of electrons, the display of an intermediate character is ..
hybridization
polarity
resonance
antibonding
76
Who state that whether an object acts like a particle or a wave depends on how it is observed?
Bohr
Chadwick
Broglie
Heisenberg
77
How many orbitals does a d sublevel contain?
5
10
3
6
78
Which of the below would have 8 dots around them in their Lewis structure?
Helium
Arsenic
Radon
Two of the above
79
Which of the below has the highest energy?
4d
5p
5s
4f
80
The process by which new kinds of orbitals with equal energies are formed from a combo of orbitals is know as orbital ..
two of the above
hybridization
resonance
polarity
81
The _________ uncertainty principle states that you cannot know the energy and position of a _______ at the same time.
Broglie, electron
Broglie, proton
Heisenberg, electron
Heisenbergy, proton
82
Which types of elemets typically have positive oxidation numbers?
nonmetals
metalloids
noble gases
metals
83
Which part of the atom is negatively charged?
both n + e
proton
neutron
electron
84
Which type of sublevel can contain 10 electrons?
p
f
s
d
85
A(n) _________ formula tells what elements are present and gives the simplest whole -number ratio of atoms
molecular
structural
mathematical
empirical
86
What property did Mendeleev use to organize his table?
atomic number
atomic mass
none of the above
atomic radius
87
Mg2+ is a _________.
Positron
Anion
Cation
Isotope
88
How many atoms are in 3.00 grams of copper?
1.81 x 10^24
2.84 x 10^24
1.81 x 10^22
2.84 x 10^22
89
What indicated the precision of a measurement and helps scientists report measurements honestly?
unit analysis
significant digits
unit of measurement
scientific notation
90
How many sigma and pi bonds are there in a molecule of O2?
1 sigma, 2 pi
1 sigma, 1 pi
no sigma, 1 pi
1 sigma, no pi
91
Which elements ALWAYS have a +1 charge?
transition metals
alkaline earth metals
Alkali metals
halogens
92
A cation has a/the _________ atomic radius than/as its parent element.
hmmm
smaller
same
larger
93
Which of the following is the correct value for Avogadro's number?
6.23 x 10^22
6.032 x 10 ^22
6.22 x10^23
6.022 x 10^23
94
_____________ measure how close together measurements are to each other.
accuracy
precision
equations
percent error
95
Who came up with the law of octaves?
Lavoisier
Dobereiner
Newlands
Dalton
96
How many significant digits are in 0.0560 g?
5
2
4
3
97
How many electrons are in the atom O2-?
10
cannot tell with this information
6
8
98
Which elements discovery proved that Mendeleev's table was not crazy but brilliant?
Aluminum
Arsenic
Gallium
Mercury
99
Which of the following compounds is polar?
CO2
CH4
NH3
Br2
100
Who used spectroscopy to determine the energy level of electrons in different atoms?
Bohr
Rutherford
Dalton
Thomson
101
In a chemical reaction the compounds on the left side of the equation (before the arrow) are the __________.
products
resultants
variables
reactants
102
Which country came up with the SI units?
France
United States
Britain
China
103
Fluorine is one of the special oxidation numbers and if bonded to another element ALWAYS has a number of _________.
+1
+2
-2
-1

Chemistry Final 2025 Prep Flashcards | StudBud