stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
Midterm Review Flashcards | StudBud
Explore
/
Midterm Review
Midterm Review
58 terms
·
StudBud Administration
·
102 plays
#chemistry
Flashcards
58 cards
F
Practice quiz
P
Host live
L
Questions
58
Answers
1
Dalton incorporated the law of conservation of mass into his atomic theory by asserting that
atoms of different elements have different properties.
matter is composed of atoms.
atoms can be destroyed in chemical reactions.
atoms are indivisible.
2
Which of the following is an extensive property of matter?
volume
melting point
density
boiling point
3
The number of valence electrons in Group 17 elements is
equal the period number
7
17
8
4
The electron configuration of cesium, atomic number 55, is [Xe] 6
s
1
. In what period is cesium?
Period 1
Period 8
Period 6
Period 55
5
An atom is
the smallest unit of a compound.
smaller than an electron.
always made of carbon.
smallest unit of matter that maintains its chemical identity
6
The product of the frequency and the wavelength of a wave equals the
speed of the wave.
time for one full wave to pass.
number of waves passing a point in a second.
distance between wave crests.
7
A sample of gold has a mass of 96.5 g and a volume of 5.00 cm
3
. The density of gold is
483 g/cm3.
19.3 g/cm3.
101.5 g/cm3.
0.0518 g/cm3.
8
A chemical can be defined as
a toxic substance.
an unnatural additive placed in food.
any substance that is not alive.
any substance that has a definite composition.
9
Which of the following is an example of a heterogeneous mixture?
sea water
sucrose
granite
a gold ring
10
The change of an atom from an excited state to the ground state always requires
an increase in electron energy.
emission of electromagnetic radiation.
absorption of energy.
release of visible light.
11
Read the following question and answer
Ramsay
Mendeleev
Moseley
Bohr
12
Organic chemistry is the study of
the chemistry of living things.
crystals and minerals.
carbon-containing compounds.
properties, changes, relationships between energy & matter
13
The carbon-12 atom is assigned a relative mass of exactly
12 amu.
1 amu
6 amu
100 amu.
14
An aluminum isotope consists of 13 protons, 13 electrons, and 14 neutrons. Its mass number is
40.
14.
27.
13.
15
Experiments with cathode rays led to the discovery of the
proton.
nucleus
electron
neutron
16
Which statement is true about half-lives?
Each radioactive isotope has its own half-life.
Different atoms of the same nuclide have differen half-lives
All radioactive nuclides of an element have same half-life
All radioactive nuclides have the same half-life.
17
The SI base units for length and time are
meter and second.
centimeter and second.
centimeter and hour.
meter and hour.
18
Which of the following is the correct relationship between mass and energy?
E2 = mc
E = m2c
E = mc2
E = mc
19
The number of atoms in 1 mol of carbon is
5.022 x 1022.
5.022 x 1023.
6.022 x 1022.
6.022 x 1023.
20
0.25 g is equivalent to
250 kg
250 mg
0.025 mg
0.025 kg
21
Read the following questions
atoms were indivisible.
there was gas in the tube.
the particles of the beam were negatively charged.
a magnetic field was produced
22
Because most particles fired at metal foil passed straight through, Rutherford concluded that
atoms contained no charged particles.
atoms were indivisible.
atoms were mostly empty space.
electrons formed the nucleus.
23
Visible light, X rays, infrared radiation, and radio waves all have the same
frequency.
wavelength.
speed.
energy.
24
The set of orbitals that are dumbbell shaped and directed along the x, y, and z axes are called
p orbitals.
d orbitals.
s orbitals.
f orbitals.
25
Bohr's theory helped explain why
most of the mass of the atom is in the nucleus.
electrons have negative charge.
atoms combine to form molecules.
excited hydrogen gas gives off certain colors of light.
26
All of the following are SI units for density
except
g/m2.
g/cm3.
kg/m3.
kg/L.
27
Which of the following is
not
a chemical change?
igniting
burning
melting
rusting
28
If electrons in an atom have the lowest possible energies, the atom is in the
radiation-emitting state
excited state
ground state
inert state
29
A measure of the quantity of matter is
volume
density
mass
weight
30
In nuclear chemistry, an atom is referred to as a(n)
alpha particle
nucleus
nucleon
nuclide
31
A three-dimensional region around a nucleus where an electron may be found is called a(n)
spectral line.
orbit.
orbital.
electron path.
32
The relationship between the mass
m
of a material, its volume
V
, and its density
D
is
D = m + v.
D = mV.
D = m/V.
D = V/m.
33
Reactions that affect the nucleus of an atom are called
nuclear reaction
fissions
fusions
radioactive decays
34
Read the following questions
less than
greater than
either greater than or less than
equal to
35
How many elements are in a period in which only the
s
and
p
sublevels are filled?
2
18
8
32
36
What is the electron configuration for nitrogen, atomic number 7?
1s2 2s2 2p2 3s1
1s2 2s2 2p3
1s2 2s3 2p1
1s2 2s3 2p2
37
Chlorine has atomic number 17 and mass number 35. It has
17 protons, 17 electrons, and 18 neutrons.
18 protons, 18 electrons, and 17 neutrons.
17 protons, 17 electrons, and 52 neutrons.
35 protons, 35 electrons, and 17 neutrons.
38
Which of these is
not
an SI base unit?
second
Kelvin
liter
kilogram
39
During radioactive decay, the nucleus disintegrates into
a lighter and more stable nucleus.
a lighter and less stable nucleus.
a heavier and less stable nucleus.
a heavier and more stable nucleus.
40
A spherical electron cloud surrounding an atomic nucleus would best represent
a combination of px and py orbitals.
a px orbital.
a combination of an s and a px orbital.
an s orbital.
41
The density of Al is 2.70 g/cm
3
. What is the mass of an Al piece with a volume of 1.50 cm
3
?
1.80 g
4.20 g
0.556 g
4.05 g
42
The statement that an electron occupies the lowest available energy orbital is
the Aufbau principle.
Hund's rule.
Bohr's law.
the Pauli exclusion principle.
43
What is a magic number?
the number of energy levels
the number of shells in the nucleus
the number of paired nucleons
#of nucleons that represents completed nuclear energy levels
44
Which of the following observations is qualitative?
A chemical reaction was complete in 2.3 seconds.
The solid had a mass of 23.4 grams.
Salt crystals formed as the liquid evaporated.
The pH of a liquid was 5.
45
The electron notation for aluminum (atomic number 13) is
1s2 2s2 2p9.
1s2 2s2 2p6 3s2 3p1.
1s2 2s2 2p3 3s2 3p3 3d1.
1s2 2s2 2p6 3s2 2d1.
46
Which of the following is
not
a physical change?
burning
boiling
cutting
grinding
47
The frequency of electromagnetic radiation is measured in waves/second, or
nanometers.
hertz
joules
quanta
48
Which of the following lists ranks nuclear radiation from most massive to least massive?
gamma, alpha, and beta
gamma, beta, and alpha
beta, gamma, and alpha
alpha, beta, and gamma
49
If a mixture is not uniform throughout, it is called
chemically bonded
homogenous
solution
heterogenous
50
What does the 218 in polonium-218 represent?
the atomic number
the number of protons
the mass number
the number of neutrons
51
Read the following question and answer
a positive charge
both protons and electrons
no charge
a negative charge
52
The Aufbau principle states that an electron
can have only one spin number.
occupies the lowest available energy level.
must be paired with another electron.
must enter an s orbital.
53
Read the following question and answer
shorter
longer
exactly half the length of B's wavelength
equal
54
Inorganic chemistry is the study of
mathematical modeling.
the chemistry of living things.
the identification of the composition of materials.
non-carbon related compounds.
55
Read the following question and answer
electron configuration
ionization potential
electronegativity
electron affinity
56
The unit m
3
measures
area
time
length
volume
57
The Pauli exclusion principle states that no two electrons in the same atom can
have the same set of quantum numbers.
be at the same main energy level.
occupy the same orbital.
have the same spin quantum numbers.
58
100 milliliters is equivalent to
1 centiliter.
1 deciliter.
1 hectoliter.
1 microliter.
