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