Show:
Organizing th Elements
Exploring the Periodic Table
Families of Elements
Valence Electrons
Potpouri
100
One of the first Scientist to organize the elements.
Who is Dmitri Mendeleev.
100
An atom becomes this when it gains or loses electron, and becomes a charged particle.
What is an ion?
100
These are in Group 1 of the periodic table
What are alkali metals?
100
This group has 2 valence electrons.
What is group 2?
100
The number of elements listed in the periodic table.
What is 109?
200
Left to right these elements are less metalic, what is this arrangement called?
What is period?
200
An elements chemical properties are determined by this.
What is valence electrons.
200
These are in group 2 of the periodic table.
What are alkali earth metals?
200
This group has 5 valence electrons.
What is What is group 15?
200
The number of protons in an atom.
What is atomic number?
300
Elements in this arrangement have similar chemical and physical properties.
What is group?
300
An atom that gains one or more electrons becomes a negative ion.
What is anion?
300
These are in group 18 of the periodic table.
What are the noble gases?
300
The number of valence electrons varies here.
What is What are groups 3 -- 12?
300
Atomic mass.
What is the total number of protons and neutrons in an atom?
400
40 years after Mendeleev the English chemist Henry Moseley arranged the elements this way, which is the modern periodic table.
What is by atomic number?
400
An element that loses electrons becomes a positive ion.
What is cation?
400
These elements are in group 17 of the periodic table.
What are halogens?
400
Mg 2+ has this number of electrons.
What is 10?
400
Isotope.
What is an element that has the same number of protons, but a different number of neutrons than another atom of the same element?
500
The law that states that the repeating chemical and physical properties of elements change periodically with the atomic number of the elements.
What is periodic law?
500
All of these elements except for hydrogen are found here on the periodic table.
What is on the right side?
500
These elements often and easily combine to form "salts".
What are alkali metals and halogens?
500
Number of valence electrons in tin.
What is 14?
500
Seven and eighteen.
What is the number of periods and groups in the periodic table?