History
Symbols
Vocabulary
Representative Element
Transition Elements
100
Dmitri Mendeleev
Who published the first version of the periodic table?
100
C
What is the symbol for carbon?
100
a substance that cannot be broken down into simpler substances
What is an element?
100
elements in groups 1 and 2 in the periodic table that include metals, metalloids, and nonmetals
What are representative elements?
100
elements in groups 3-12 in the periodic table, all of which are metals
What is transition elements?
200
1869
When was the first version of the periodic table published?
200
Na
What is the symbol for sodium?
200
a row of elements in the periodic table whose properties change gradually and predictably
What is a period?
200
elements in group 1 of the periodic table
What is alkali metals?
200
the iron triad
What is iron, cobalt, and nickel?
300
twentieth century English physicist
Who is Henry Moseley?
300
Fe
What is the symbol for iron?
300
family of elements in the periodic table that have similar physical or chemical properties
What is a group?
300
elements in group 2 on the periodic table
What is alkaline earth metals?
300
two series of inner transition elements
What is lanthanides and actinides?
400
by increasing number of protons
How was Moseley's periodic table arranged?
400
Kr
What is the symbol for krypton?
400
an element that shares some properties with metals and some with nonmetals
What is a metalloid?
400
the family in group 13
What is the Boron Family?
400
the first series of inner transition elements which goes from cerium to lutetium
What is lanthanide?
500
gallium, scandium, and germanium
What are the three missing elements in Mendeleev's periodic table?
500
W
What is the symbol for tungsten?
500
doesn't conduct electricity as well as a metal, but does conduct electricity better than a nonmetal
What is a semiconductor?
500
the family in group 16 on the periodic table
What is the oxygen family?
500
are the only actinides that are found naturally on Earth
What is thorium, protactinium, and uranium?
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