Element Symbols
Element Symbols
Uses of Elements
Definitions
History of Elements
100
Al
What is aluminum
100
Se
What is selenium
100
drink cans
What is aluminum
100
an atom that has gained a charge due to gaining or losing electrons
What is an ion
100
drew the first periodic table
What is Dimitry Mendeleyev
200
Mg
What is magnesium
200
Ar
What is argon
200
electrical wires
What is copper
200
An atom that has the same atomic number but different atomic masses due to differing numbers of neutrons
What is an isotope
200
The way the periodic table is organized
What is by the atomic number
300
Au
What is gold
300
Ag
What is silver
300
diamonds
What is carbon
300
A positively charged ion
What is a cation
300
Who arranged the periodic table by atomic number instead of atomic mass
Who is Henry Moseley
400
U
What is uranium
400
W
What is tungsten
400
used to kill small germs in swimming pools
What is chlorine
400
The superscripted number by an elements symbol indicating charge
What is an oxidation number
400
These elements are made in a lab, and have atomic masses shown in parentheses since they cannot be accurately measured
What is synthetic elements
500
Pb
What is lead
500
Hg
What is mercury
500
makes materials glow
What is phosphorus
500
The outermost electron shell
What is valence shell
500
In the 1790's he made a list of known elements of the time
Who is Antoine Lavoisier
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