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Chapter 2 and 3 - Final Exam Review Flashcards | StudBud
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Chapter 2 and 3 - Final Exam Review
Chapter 2 and 3 - Final Exam Review
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1
Which of these metric units is used to measure mass?
g
mm
m
L
2
When 1.92 x 10
-6
kg is divided by 6.8 x 10
2
mL, the quetient equals
2.8 x 10-8 kg/mL
2.8 x 10-5 kg/mL
2.8 x 10-4 kg/mL
2.8 x 10-9 kg/mL
3
The atomic mass of an element listed in the periodic table is the
relative atomic mass of the most abundant isotope
relative mass of the most abundant radioactive isotope
average atomic mass
mass number of the least abundant isotope
4
Atoms of the same element can differ in
chemical properties
number of protons and electrons
atomic number
mass number
5
The unit m
3
measures
time
area
length
volume
6
The charge due to the electrons of a neutral atom
prevents compounds from forming
attracts electrons in other atoms
does not exist
balances the charge on the nucleus
7
The product of 13 cm and 5.7 cm is correctly reported as
74.0 cm2
74.1 cm2
75 cm2
74 cm2
8
A prospector finds 39.39 g of pure gold (molar mass = 196.9665 g). She has
1.204 x 1023 atoms of Au
4.306 x 1023 atoms of Au
6.022 x 1023 atoms of Au
2.308 x 1023 atoms of Au
9
The mass of 2.0 mol of oxygen atoms (molar mass = 28.0855g) is approximately
48 g
32 g
64 g
16 g
10
The rays produced in a cathode tube are
unaffected by a magnetic field
striking the cathode
found to carry a positive charge
deflected away from a negative plate
11
A nuclear particle that does not have a charge is called a(n)
isotope
neutron
election
nuclide
12
The symbols for units of length in order from largest to smallest are
m, cm, mm, km
km, m, cm, mm
km, mm, cm, m
mm, m, cm, km
13
Because most particles fired at metal foil passed straight throught, Rutherford concluded that
atoms were indivisible
atoms contained no charged particles
atoms were mostly empty space
elections formed the nucleus
14
A statement that can be tested experimentally is a
model
variable
generalization
hypothesis
15
The atomic number of nitrogen, 7, indicates that there are seven
protons in the nucleus of a nitrogen atom
neutrons outside the nitrogen atom's nucleus
nitride nuclides
energy levels in the nitrogen atom's nucleus
16
The atomic # of phosporus is 15. The atomic # of zinc is 30. Compared with a mole of phosphorus, a mole of zinc contains
an equal number of atoms
twice as many atoms
half as many atoms
20 times as many atoms
17
The nucleus of an atom has which of the following charactistics
is negatively charged
is positively charged
contains nearly all of the atom's volume
has a larger volume that the election cloud
18
As the mass number of an element's isotopes increase, the number of protons
increases
decreases
doubles each time the mass number increases
remains the same
19
Chlorine has atomic number 17 and mass number 35. It has
17 protons, 17 electrons, and 52 neutrons
17 protons, 17 electrons, and 18 neutrons
35 protons, 35, and 17 neutrons
18 protons, 18 electrons, and 17 neutrons
20
The relative atomic mass of an atom can be found by comparing the mass of the atom to the mass of
one atom of carbon-12
a proton
one atom of hydrogen-1
uranium-235
21
Which of the following observation is quantitative?
The liquid is cloudy.
The liquid boils at 100 °C.
The liquid tastes bitter
The liquid turns blue litmus paper red
22
The density of aluminum is 2.70 g/cm
3
. What is the mass of a solid piece of aluminum with a volume of 1.50 cm
3
?
0.556 g
1.80 g
4.05 g
4.20 g
23
Which of the following is
not
part of Dalton's atomic theory?
The number of protons in an atom is its atomic number.
All matter is composed of extremely small particles called atoms.
Atoms cannot be divided, created, or destroyed
In chemical reations, atoms are combined, separated, or rearranged.
24
0.25 g is equivalent to
0.025 mg
0.025 kg
250 mg
250 kg
25
The quantity of matter per unit volume is
weight
density
inertia
mass
26
The symbol mm represents
meter
millimeter
micrometer
milliliter
27
The number of significant figures in the measured value 0.0320 g
5
2
4
3
28
The measurement 0.048547 g rounded to two significant figures would be
0.049
0.05
0.048
0.0486
29
An atom is electrically neutral because
the numbers of protons and neutrons are equal
neutrons balance the protons and elections
nuclear forces stabilize the charges
the numbers of protons and electrons are equal
