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Periodic Table
Periodic Table
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Organization of the periodic table
Flashcards
35 cards
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Questions
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Answers
1
Why was the periodic table recreated by Mosely?
He was Mendeleev’s greatest scientific rival
Atomic number organization is more accurate
He discovered the noble gases
Atomic weight was discovered tobeamuchbetterorganizationtool
2
A one or two letter representation of an element is called
chemical equation
Chemical formula
chemical name
chemical symbol
3
Where are the metalloids found on the periodic table?
On the right side
On the left side
On the stairstep
4
The elements in a column of the periodic table are called
periods
atomic mass
atomic numbers
groups
5
Potassium
P
Na
Pt
K
6
Electrons found in the outermost energy level of an atom and determine combining power
inner
special
outer
valence
7
All the elements in a family have the same (or similar):
Chemical and physical properties
Density
Number of Neutrons
Numbers of Protons
8
The mass number tells you the number of...?
Electrons
Protons + electrons
Neutrons
Protons + Neutrons
9
Where are most metals on the periodic table
In the middle only
On the left side only
On the right side only
On the left side and in the middle
10
The period number represents
the end of a sentence
the number of electrons in the outer energy level
the number of protons in the nucleus
the number of energy levels surrounding the nucleus
11
Which group is least likely to react with other elements?
Halogens
Noble gases
Alkali metals
12
An average mass of all of an elements isotopes is the element's
chemical symbol
chemical formula
atomic mass
atomic number
13
Scientist who recognized the the patterns of elements in 1869
Dalton
Einstein
Bohr
Mendeleev
14
What is the period number and the group number for the element iodine?
Period 5 , Group 17A
Period 16 , Group 2A
Group 2 Period 16A
Group 5 , Period 17A
15
Sodium
Ne
Al
Na
P
16
A chart of elements showing the repeating pattern of their properties is called
Electromagnetic Spectrum
Element chart
Punnett Square
Periodic Table
17
Mendeleev's periodic table was arranged according to
isotopes
atomic number
atomic mass
chemical symbol
18
The modern periodic table is arranged according to
atomic number
atomic mass
isotopes
chemical symbol
19
In an electric arrangement, the third shell can hold how many electrons?
8
3
18
2
20
elements in the same group DO NOT have
the same ionic charge
similar reactivity
the same number of electron shells
the same number of valence electrons
21
An element that has properties of both metals and nonmetals.
metal
nonmetal
metalloid
noble gas
22
Elements in the same ___________ chemically react in a similar way
period
row
group
family
23
Elements in the same group, on the periodic table have similar
atomic numbers
chemical properties
atoms
shapes
24
Each horizontal row in the periodic table is called
family
period
chemical row
group
25
Which elements are in the same period?
N and O
N and P
O and S
F and Cl
26
Elements that are poor conductors of heat and electricity.
nonmetal
halogen
metal
metalloid
27
Elements in a group have the same . . .
number of electrons in outer shell
chemical symbol
number of protons
physical properties
28
Shiny, malleable, ductile and conduct heat and electricity.
metalloids
nonmetals
noble gases
metals
29
If Copper has 29 protons, how many electrons does it have?
10
28
30
29
30
The Group Number that an atom belongs to tells us...
How many valence electrons an atom has
How many neutrons an atom has
How many protons an atom has
How many electrons an atom has in the inner shell
31
Elements in the same period of the periodic table have similar properties.
False
True
32
How many electrons can the first shell hold?
8
2
32
18
33
Henry Mosely organized the elements by what property?
Electronegativity
Ionization Energy
Atomic Number
Atomic Mass
34
Where are metals found on the periodic table
Right hand side
Top
Bottom
Left hand side
35
The ability of an object to transfer heat or electricity to another object.
reactivity
malleability
corrosiveness
conductivity
