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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 basic periodic table organization and use.
Flashcards
25 cards
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Questions
25
Answers
1
What element makes up about 78% of the air we breathe?
Oxygen
Nitrogen
Neon
Carbon dioxide
2
The atomic mass of an atom is equal to the
number of protons and neutrons
protons and electrons
electrons and neutrons
3
How many electrons does one atom of lithium have?
3
2
4
1
4
Elements in the same period have the same number of
protons
atoms
electron shells
electrons
5
Interactions between atoms that hold them together are called
electrons
bonds
links
atomic numbers
6
The vertical column of elements on the periodic table is called a(n)
category
semiconductor
period
group
7
Most metals are
dull
not malleable
solid at room temperature
bad conductors of electric current
8
Elements in group 17, the halogens, are very reactive because
they are very stable
have only one valence electron, and could get rid it easliy
They have 7 valence electrons, almost a full shell
9
The elements to the left of the zigzag line on the periodic table are called
nonmetals
metals
metalloids
conductors
10
How many neutrons does one atom of lithium have?
1
3
2
4
11
Most of the elements in the periodic table are
metalloids
nonmetals
metals
gases
12
The last group of the periodic table, the noble gases, are all
unstable
solids at room temperature
nonreactive
very reactive
13
Which of the following is a property of alkali metals (the first group)?
very hard solid
liquid at room temperature
very reactive
nonreactive
14
Elements in the same group have
Different numbers of valence electrons
The same number of valence electrons
The same number of electron shells
15
The elements' properties follow a pattern that repeats every
14 elements
5 elements
7 elements
10 elements
16
How many electrons can all but the first energy shell (level) hold?
2
16
8
4
17
Mendeleev arranged the elements by
decreasing melting points
increasing atomic mass
increasing atomic number
increasing density
18
Periodic
means
Happening 3 or 4 times a year
Happening at regular intervals
Happening very rarely
Happening frequently
19
Groups 3-12 are the
halogens
alkali metals
alkaline earth metals
transition metals
20
How many protons does one atom of lithium have?
4
2
1
3
21
The first electron shell (energy level) can hold how many electrons?
2
8
6
4
22
The number of protons in an atom is equal to the number of ___________ in that same atom.
shells
nuclei
electrons
neutrons
23
How many VALENCE electrons does one atom of lithium have?
2
1
4
3
24
What determines the chemical properties (reactivity) of an element?
protons
valence electrons
atomic mass
all electrons
25
What determines how or if an atom will form bonds?
neutrons
electron shells
protons
valence electrons
