M6 Deck - The Periodic Table Flashcards
Who is Dmitri Mendeleev
A german scientist who published a periodic table in 1869
What was Mendeleev’s Period Table based on?
It was based on the similarity of properties and reactivities exhibited by certain elements
Who is Henri Mossley?
English scientists who established a periodic table based on number in 1887 to 1915
What are groups? (aka families)
coloumns of elements going horizontally numbered 1 to 7 and 0.
What do elements in groups share?
they share the same number of electrons.
What are periods?
rows of elements going vertically numbered 1 to 7.
What do elements in periods share?
they share the same number of electron shells.
What are the three classes of elements?
the 3 classes are metals, non-metals and mettaloids
Where are metals located on the periodic table?
they are located to the left of the zig-zag line
What are chemical properties of metals?
they have few electrons in their outer energy level so they lose electrons easily.
What are physical properties of metals?
they are Ductile and good Conductors, Malleable, Shiny and are most Solid at Room temperature.
Where are Non-Metals located on the periodic table?
they are to the right of the zig-zag line
What are the chemical properties of non-metals?
they have full outer energy levels so they gain electrons and most have some but some have all.
What are the physical properties of non-metals?
they are not Ductile, Malleable, not Shiny are poor Conductors. they are most solid at room temperature, but some are gas at room temperature
Where are the Metalloids located on the periodic table?
they border the zigzag line on the periodic table
What are chemical properties of metalloids?
most atoms have 1/2 (one half) of a complete set of electrons in the outer level
What are the physical properties of metalloids?
they have properties of both metals and non-metals.
To the left, center and right is which physical state on the periodic table?
Solid is to the left, center and right.
To the middle and on the right is which physical state on the periodic table?
Liquids are in the middle and on the right.
To the far right (except hydrogen) is which physical property on the periodic table?
Gases are on the far right (except hydrogen)
Which two chemicals are liquids at room temperature
Bromine and Mercury become liquids at room temperature
What are the 7 groups/families of the periodic table?
Alkali Metals
Alkaline Earth Metals
Carbon Family
Nitrogen Family
Oxygen Family
Halogen Family
Nobel Gases
Alkali Metals (G 1)
are the most reactive metals and are always found Bonded with other elements.
Alkaline Earth Metals (G 2)
are very reactive and are always found Bonded with other elements
