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The Periodic Table Flashcards | StudBud
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The Periodic Table
The Periodic Table
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Review of Chapters 4 and 5
Flashcards
35 cards
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Practice quiz
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Questions
35
Answers
1
Which statement is NOT true about the elements fluorine, chlorine, and iodine?
They are similar to noble gases
They react easily with metals
They are all halogens
They are all nonmetals
2
Compared with Group 2A elements, Group 6A elements have
fewer valence electrons
more valence electrons
more isotopes
more atoms in the ground state
3
The usefulness of Mendeleev’s periodic table was confirmed by
the discovery of elements with predicted properties
the discovery of the nucleus
it's immediate acceptance by other scientists
the discovery of sub-atomic particles
4
The glowing of a neon light is caused by electrons emitting energy as they
move from lower to higher energy levels
collide with other electrons
collide with the nucleus
move from higher to lower energy levels
5
Which statement is true about oxygen-17 and oxygen-18?
They do not have the same number of protons
they have the same mass number
Their atoms have an identical mass
they are isotopes of oxygen
6
The unit for atomic mass is
Newton
pound
gram
amu
7
What can you assume has happened if an electron moves to a higher energy level?
the electron has lost energy
the atom has lost an electron
the atom has become more stable
the electron has gained energy
8
What is the difference between an atom in the ground state and an atom in an excited state?
The atom in an excited state has one fewer electron
The atom in an excited state has one more electron
The atom in the ground state has less energy &is less stable
The atom in an excited state has more energy &is less stable
9
Among the alkali metals, the tendency to react with other substances
does not vary among members of the group
decreases from top to bottom within the group
increases from top to bottom within the group
varies in an unpredictable way within the group
10
At room temperature, none of the metals are
gases
malleable
liquids
soft
11
In a periodic table, a set of properties repeats from
group to group
element to element
column to column
row to row
12
Elements that are gases, are brittle and are poor conductors at room temperature are
metalloids
metals
isotopes
non metals
13
Who provided evidence for the existence of a nucleus in an atom?
Ernest Rutherford
J. J. Thompson
Democritus
John Dalton
14
The atomic mass of an element is
the sum of the protons and neutrons in one atom of a element
twice the number of protons in the nucleus of the atom
a ratio based on the mass of carbon
a weighted avg. of the masses of an element's isotopes
15
Which general statement does NOT apply to metals?
Most metals are good conductors
Most metals are malleable
Most metals are brittle
Most metals are ductile
16
To find the number of neutrons in an element you would subtract....
atomic number from electron number
atomic number from mass number
average atomic mass from mass number
mass number from atomic number
17
The pattern of repeating properties of elements revealed in the periodic table is known as ___.
the Law of Multiple elements
the Law of Multiplicity
the Periodic Law
the Periodic Table
18
The number of protons in one atom of an element is that element’s
mass number
atomic mass
valence
atomic number
19
Horizontal rows of the periodic table are called
groups
families
clusters
periods
20
Which halogen is most likely to react?
Bromine
Flourine
Iodine
Chlorine
21
Which of the following is unique for each individual element?
the number of protons
the mass of a neutron
the charge on the electrons
the number of neutrons
22
A certain atom has 26 protons, 26 electrons, and 30 neutrons. It's mass number is
56
52
30
26
23
To keep them from reacting, some highly reactive elements are stored in
water
argon
pure oxygen
liquid mercury
24
Which of the following most accurately represents John Dalton's model of the atom
a hollow sphere with a dense nucleus
a tiny solid sphere with a predictable mass
a sphere that is hollow without
25
One twelfth the mass of a carbon-12 atom is used to define a(an)
mass number
atomic mass
atomic mass unit
atomic number
26
The tendency of an element to react is closely related to
the number of valence electrons in the atom of the element
the atom's ratio of protons to neutrons
it's atomic mass
attractions between it's atoms
27
What does the electron cloud model describe?
the number of electrons in an atom
the most likely locations of electrons in the atom
the precise locations of electrons in the atom
the mass of the electrons in the atom
28
Atoms of the most reactive elements tend to have
eight valence electrons
four or five valence electrons
one or seven valence electrons
no valence electrons
29
A particle that moves around the nucleus is
an electron
a proton
a neutron
an atom
30
Which element is found in nature only in compounds?
nitrogen
oxygen
helium
sodium
31
Which of the following Group 1A elements is the most reactive?
Li (lithium)
K (potassium)
Na (sodium)
Cs (cesium)
32
As you move from left to right across a period, the number of valence electrons
stays the same
stays the same
increases
increases and then decreases
33
Mendeleev arranged the known chemical elements in a table according to increasing
number of electrons
atomic number
number of protons
mass
34
Which element is found in most of the compounds in your body except for water?
potassium
iodine
iron
carbon
35
Which statement about sub-atomic particles is "
NOT
" true
Protons and Neutrons have almost the same mass
Protons and Neutrons have the same charge
Unlike protons and electrons, neutrons have no charge
Protons and Electrons have opposite charges
