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10 questions
The periodic table was put together by a man named ______.
Russian
Mandeleev
period
group
The man who put togehter the periodic table was from ___.
Canada
similar
mass
Russia
The elements are listed and ordered in the periodic table according to ____.
group
period
atomic nunmber
the alphabet
The number of known elements in 1869 was ___
118
60
92
400
An atomic mass has to do with the ___ of an element
number
mass
group
period
A heavy element usually has a ___ atomic number than a light element does.
same
lower
higher
17
Elements in the same row across (left to right) belong to the same
group
period
mass
number
Elements in the same up-and-down column belong to the same
group
period
mass
number
Elements of the same group have many properties that are ___.
different
similar or same
higher
lower
The number of elements in our modern periodic table is __.
60
106
92
118
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