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Chemistry 1 Final Review Flashcards | StudBud
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Chemistry 1 Final Review
Chemistry 1 Final Review
40 terms
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Final Question Bank
Flashcards
40 cards
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Questions
40
Answers
1
When 64.4 is divided by 2.00, the correct number of significant figures in the result is
4
1
6
3
2
What is the study of the mass relationship among reactants and products in a chemical reaction?
reaction stoichiometry
electron configuration
composition stoichiometry
periodic law
3
Which of these is a molecular substance whose aqueous solution carries an electric current?
iron
sugar
hydrogen chloride
liquid hydrogen
4
The process of a substance changing from a solid to a vapor without passing thru liquid phase.
condensation
sublimation
evaporation
vaporiation
5
When an electron is added to a neutral atom, a certain amount of energy is
always absorbed
always released
either absorbed or released
transferred to the more electronegative element
6
Matter includes all the following except
air
light
water vapor
smoke
7
What is the oxidation number of hydrogen in H
2
O?
+3
+2
+1
0
8
Compared with nonmetals, the # of valence electrons in metals is generally
greater
smaller
almost triple
about the same
9
Magnesium, atomic # 12, has the electron configuration [Ne] 3s
2
. To what group does it belong?
3
12
5
2
10
The standard base unit for mass is the
meter
cubic centimeter
kilogram
gram
11
If a gas with odor is released in a room, it quickly can be detected across the room because it
diffuses
is dense
condenses
is compressed
12
Idea of arranging elements on periodic table according to chem. & phys. prop. is attributed
Mendeleev
Moseley
Bohr
Ramsey
13
The reaction represented by the equation Cl
2
+ 2KBr --> 2KCl + Br
2
is a(n)
double- displacement
synthesis reaction
decomposition
single-displacement
14
If percentage yield is equal to 100%, then
there is no limiting reactant
actual yield is greater than theoretical yield
actual yield is less than theoretical yield
actual yield is equal to theoretical yield
15
When an electron is acquired by a neutral atom, the energy change is called
ionization energy
Electron affinity
electronegativity
electron configuration
16
All known chemical elements are organized into groups based on chemical properties in the
element table
none of these answers
chemical chart
periodic chart
17
Which requires that each p orbital receives one electron before any one of them can have two
Quantum Rule
Aufbua's Principle
Pauli Exclusion Principle
Hund's Rule
18
A chemical reaction involving substances A and B stops when B is completely used. B is the
primary reactant
excess reactant
primary product
limiting reactant
19
The number of valence electrons in Group 17 elements is
7
8
17
equal to period number
20
Which of the following is an electrolyte?
sugar
potassium chloride
hydrogen chloride
sodium chloride
21
Because most particles fired at metal foil passed straight through, Rutherford concluded that
atoms contained no charged particles
atoms were mostly empty space.
atoms were indivisible
electrons formed in the nucleus
22
The equation AX --> A + X is the general equation for a ___ reaction.
synthesis
single-displacement
combustion
decomposition
23
Use VSEPR theory to predict the shape of the carbon tetraiodide, CI
4
?
tetrahedral
linear
trigonal-planar
bent
24
Chlorine has an atomic number 17 and a mass number 35. It has
35 protons, 35 electrons, and 17 neutrons
17 protons, 17 electrons, and 18 neutrons
18 protons, 18 electrons, and 17 neutrons
17 protons, 17 electrons, 52 neutrons
25
What is the maximum possible amount of product obtained in a chemical reaction?
mole ratio
theoretical yield
percentage yield
actual yield
26
Which of these best describes vaporization?
the process by which a liquid changes to a gas
Both of these
the process by which a solid changes to a gas
neither of these
27
The main energy level that can hold only two electrons is the
first
fourth
third
second
28
If a mixture is uniform in composition, it is said to be
chemically bonded
homogeneous
heterogeneous
a compound
29
At its triple point, water can
exist in equilibrium in three different phases
only be present as vapor
have only three pressure values
exist only as a solid
30
In the NaCl compound, ea. Na
+
and Cl
-
ion has how many oppositely charged ions?
1
2
4
6
31
Which of the following is an example of a nonpolar solvent?
water
toulene
none of these
both of these
32
The number of electrons in the highest energy level of the Argon atom (atomic # 18) is
2
6
8
10
33
The ideal gas law combines Boyle's law, Charles' law, Gay-Lussac's law and
Avogadro's Law
Raoult's Law
Dalton's Law
Graham's Law
34
Graham's law says, 2 gases at same temp. and pressure will have different rates of effusion
because they have different molar masses
because they have different volumes
because they have different kinetic energy
because they have different condensation points
35
The angular momentum quantum number indicates the
direction of the spin of the electron in its orbital
orientation of an orbital around a nucleus
main energy level of the orbital
shape of an orbital
36
To balance a chemical equation, it may be necessary to adjust the
formulas of the products
coefficients
subscripts
# of products
37
How would oxygen be represented in the formula equation for the reaction of methane and oxygen?
oxygen
O2
O3
O
38
What are shared in a covalent bond?
dipoles
electrons
ions
Lewis Structures
39
A substance whose water solution is a good conductor of electricity is a(n)
nonelectrolyte
solute
electrolyte
nonpolar substance
40
What is the formula for silicon dioxide?
SO2
S2O
Si2O
SiO2
