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Elements and the Periodic Table
Elements and the Periodic Table
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history of the periodic table, periodic table organization and elements
Flashcards
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Questions
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Answers
1
Whose element symbols are the closest to what chemists use today?
Dalton
Lavoisier
Boyle
Berzelius
2
How many valence electrons does lithium have?
three
seven
five
one
3
Why does alchemy hold some importance for science today?
Alchemists recognized pure substances.
Alchemists discovered the modern periodic table.
It led to the discovery of how to turn lead into gold.
Alchemists discovered and purified many elements.
4
The unique feature of Moseley's table of elements was that he
left blanks for unknown elements
arranged elements by atomic mass
wrapped his table around a cylinder
arranged elements by atomic number
5
Elements in the same family have the same
atomic number
number of protons
mass number
number of valence electrons
6
The unique feature of Mendeleev's periodic table was that he
arranged the elements by atomic number
left blank spaces for predicted but undiscovered elements
wrapped his table around a cylinder
arranged the elements by atomic mass
7
Which of the following elements is NOT diatomic?
nitrogen (N)
bromine (Br)
fluorine (F)
carbon (C)
8
The element sulfur (S) is a ______________
metal
nonmetal
metalloid
semimetal
9
The family name for potassium (K) is
alkali metals
noble gases
halogens
alkaline earth metals
10
Who grouped elements into groups of three (triads)?
Dobereiner
Mendeleev
Newlands
de Chancourtois
11
Oxygen (O) has ________ valence electrons.
four
eight
six
two
12
Who noticed every eighth element had similar properties when placed in order by atomic mass?
Newlands
Mendeleev
all of these
de Chancourtois
13
Group 18 is known as the _____________
alkali metals
alkaline earth metals
noble gases
halogens
14
Group 17 is known as the _____________
alkali metals
alkaline earth metals
halogens
noble gases
15
Which family is made up entirely of gases?
noble gases
boron family
oxygen family
carbon family
16
Group 2 is known as the _____________
alkali metals
noble gases
halogens
alkaline earth metals
17
Most elements on the periodic table are
semimetals
metals
metalloids
nonmetals
18
Group 1 is known as the ____________
noble gases
alkaline earth metals
alkali metals
halogens
19
How many dots are around aluminum (Al) for its electron dot notation?
one
five
three
seven
20
Zinc (Zn) is a ___________ metal.
alkali
all of these
transition
alkaline earth
21
Which of the following would the Greeks have recognized as an element?
iron
gold
silver
water
22
Most metals are ___________ at room temperature.
solids
gases
liquids
plasmas
23
Which family of nonmetals is the most reactive?
oxygen family
boron family
halogens
carbon family
24
Elements with a full side on the 'staircase' are called _____________
gases
nonmetals
halogens
metalloids
25
What most influences the chemical and physical properties of an element?
its valence electrons
the size of the atom
the mass of the atom
the shape of the atom
