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Periodic Table of Elements Flashcards | StudBud
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Periodic Table of Elements
Periodic Table of Elements
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Questions
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Answers
1
The most reactive metals are the
metalloids
transition metals
alkali metals
alkaline earth metals
2
Which of the following sections of the periodic table contains only metals?
Period 2
Group 18
Period 6
Group 2
3
Which element has the symbol Ar?
Actinium
Argon
Arsenic
Americium
4
What is the number of neutron in this element's nucleus?
6
20
8
12
5
An element with properties that fall between a metal and nonmetal is known as a
metallurgist
matelloid
metaloid
metalloid
6
Which element has the symbol "S"?
selenium
sulfur
silicon
strontium
7
What is the atomic number of atom represented in the diagram? Assume the atom is neutral.
7
Not enough information
10
3
8
What is the symbol for Potassium?
Pt
K
Po
Ps
9
Most every cell in our bodies contains which element?
hydrogen
carbon
nitrogen
phosphorus
10
How many valence electrons would element 113 have?
113
11
131
3
11
Mendeleev's decision to leave gaps in his table was supported by the discovery of
argon
protons
gallium
electrons
12
The "8" represents
number of neutrons
number of electrons
number of protons
13
The only metal that is a liquid at room temperature is
Cr
Pd
Hg
Li
14
In a modern periodic table, elements are arranged in order of
atomic mass
number of neutrons
number of isotopes
atomic number
15
Elements with the same number of valence electrons are
called noble gases
in the same period
transition metals
in the same group
16
Elements in the _____ group are known for being extremely reactive with hot or cold water.
Transition metals
Halogens
Alkali metals
Alkaline Earth metals
17
Who re-ordered the Periodic Table of Elements by atomic number?
Henry Moseley
Mendeleev
18
Assume this is a model of an atom, what would be the black balls represent?
Neutrons
Protons
Electron
Nucleus
19
Mendeleev arranged the elements in his periodic table in order of
number of electrons
atomic number
mass
number of neutrons
20
How many periods does the periodic table have?
9
18
7
8
21
How would you classify water in Chemistry?
Element
Compound
Atom
MIxture
22
An element that is shiny and conducts heat and electricity is likely to be a
metal
nonmetal
gas
metalloid
23
An atomic mass unit is
the mass of a proton
the mass of a carbon-12 atom
1/12 the mass of a carbon-12 atom
the mass of a neutron
24
Which of the following is NOT a physical property.
Appearance
Flammability
Boiling point
Melting point
25
One-twelfth the mass of a carbon-12 atom is used to define a(n)
atomic mass unit
atomic number
mass number
26
The Noble Gases are found in which group?
1
2
7
8
27
Which element is the most abundant in Earth's crust?
phosphorus
oxygen
aluminum
nitrogen
28
How many electrons can fit into the outermost shell?
18
8
6
2
29
P is the symbol for which element?
phosphorus
platinum
plutonium
potassium
30
Which elements are all gases at room temperature?
Group 7
Group 3
Group 1
Group 8
31
The 15.999 represents
atomic mass units
element name
number of neutrons
atomic number
32
Hg is the symbol for which element?
helium
hydrogen
hafnium
mercury
33
The atomic number represents the number of
electrons
nucleus
protons
neutrons
34
Most elements known today are
nonmetals
metalloids
metals
35
How many elements are found in the compound C
6
H
12
O
6
?
24
6
3
1
36
Copper is an example of
an alkaline earth metal
an alkali metal
a transition metal
a nonmetal
37
Elements in a ____ have the same number of electron shells.
group
period
38
This group of elements are colorless, odorless, and extremely unreactive.
Noble gases
Alkali metals
Alkaline Earth metals
Halogens
39
Electrons flow freely through a copper wire. Copper is an example of a good
insulator
conductor
inductor
40
Which of the following is formed when two elements combined chemically?
an atom
a compound
an electron
a mixture
