Mendeleev
Periodic Law
Classes of Elements
Group
Elements
100
What did Mendleleev invent?
He created the periodic table
100
How many rows are in the modern periodic table?
7
100
How many classes of elements are there?
3
100
How many groups are there?
There are 8 groups.
100
What is the first element?
Hydrogen
200
Where did he get the idea for the periodic table?
From his favorite card game a version of solitaire
200
define a group
Properties of elements repeat in a predictable way when atomic numbers are used to arrange elements into groups
200
The elements are classifyed into groups________,_______,and ___________
metels, meteloids, and nonmetels
200
What is the element symbol for lead?
Pb
300
How did he arrange the elemnt in the rows?
By increasing mass
300
How are the elements arranged in a modern periodic table?
By increasing atomic number
300
What is a transition metal?
The elements that form a bridge between the elements on the left and right side of the table.
300
What group is only made of up of gases?
The noble gases
300
What is the element symbol for antimony?
Sb
400
What element did he predict that would come after aluminium? What did he call it?
Eka-aluminium
400
The element symbol Ga comes from what element?
Gallium
400
Which are more reactive metals or nonmetals?
Metals
400
What group does not end in metals, family or gases?
The Halogens
400
What is the element symbol for hafnium?
Hf
500
Explain how Mendleev order the Periodic Table
Mendleev aranged the elements into rows in order of increasing masss so that elements with similar properties were in the same coumn.
500
The element symbol Cf comes from what element?
Californium
500
Are metaliods good conductors in high or low temperature?
High temperature
500
What is element from the Boron Family is most abundent metal on the earth crust?
Aluminum
500
What is the element symbol for thulium?
Tm
M
e
n
u