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