Card Set Information
Who are two main contributors to the periodic table?
Dmitri Mendeleev arranged the ________ perioid table in order of ____________________.
first periodic table
order of increasing atomic masses
Henry Moseley arranged _________ periodic table in order of ___________.
Today's periodic table
arranged in order of increasing atomic numbers
What is the difference between Mendeleev's table and Moseley's table?
Mendeleev arranged his table by increasing atomic masses Moseley arranged his table by increasing atomic numbers
Elements in the same period do not have the same ___________.
The 1st element in a period is very _________.
very active period
last element in a period is very _______.
very inactive gas
Where is familes/groups located?
vertical columns on periodic table
When are properties similar?
Are similar when moving down a group
Where is alkali metals located?
group 1 metals
where are alkaline earth metals located?
group 2 metals
Alkali metals have how many valence electrons? Does it give up or gain when bonding?
1 valence electron. Gives up this electron when bonding with other atoms.
What group of elements are very reactive with water and very soft?
Notes: Alkali metals burned if touched.
Where is alkali metals never found in?
never found alone in nature.
Where is alkaline metals stored?
stored in gasoline or kerosene.
When alkaline earth metals bond, do they gain or lose electrons.
usually gives up the 2 valence electrons when bonding
Notes: Alkaline earth metals is slower to react than alkali
Where is alkaline earth metals located?
found in earth's crust & in minerals
Alkaline earth metals are what than group 1 elements?
Notes: Most familiar metals are transitions:, iron, gold, silver
What element is used in skull plates
Which kind of metals is harder than alkali metals
Transition metals are ______ reactive with water than alkali metals
What is transiton metals used for?
used for structure purposes.
What element is used on hip replacement?
What is the family name for family 13?
What does the boron family include?
includes aluminium, the mose common metal in the Earth's outer layer.
What is the name for family 14?
In the carbon family what will the valance electrons do when bonding?
will give electrons to another atom or take electrons from another atom when bonding
What is the name for the family 15.
What will happen to the nitrogen family when bonding
will take electrons from another atom when bonding.
What is the name for family 16?
chalcogen are forming
What 2 elements are commonly found in ores.
oxygen and sulfur- top 2 elements
What will happen to family 16 when bonding?
will take electrons from another atom when bonding
What is the name for family 17?
what does haologens mean
Why don't noble gases react with other elements?
Because they are very stable. Have a full outer electron shell
What are the noble gases also known as?
What do the halogens do with electrons when bonding?
will take electron during bonding
How many valence electtrons do halogen elements have?
Which elements belong to the nitrogen family?
Nitrogen, Phosphorus, Arsenic, Antimony, and Bismuth
What are the halogen elements used for?
Iodine and bromine used in halogen lamps because it allow tungsten filament to brighter without burning out quickly
WHat is the name of the family of elements that will give up or take elctrons from other atoms
family 14, carbon family
What type of elements, metal, nonmetal, or metalloid, are the elements in the boron family?
Metalloid and metal
What is the name of the family with atoms that have 3 valence electrons
Boron family, family 13
Of the alkali, alkaline earth and transition metals, which area is least reactive in water?
List all of the alkaline earth metal elements?
Berylium, Magnesium, Calcium, Strontium, Barium, Radium
Between alkali and alkaline earth metals, which is slower to react?
alkaline earth metals
Which families of elements are harder: alkali or alkaline earth metals?
alkaline earth metals
Which family of elements is most active?
List all of elements that are halogens?
Flourine, Chlorine, Bromine, Iodine, Astatine
What are the two special names for the rare earth metals?
Lanthanide series and Actinide series
True or false. Hydrogen is a metal at room temp.
What family is rare in nature?
family 17- halogen
What are diatomic molecules?
molecules that are made up of 2 atoms of the same element
What are the 7 diatomic molecules we are going to be working with?
What are the types of bond?
Convalent- electrons are shared between two nonmetal atoms
Ionic- Electrons are transformed between a metal atom and a nonmetal atom.
What element are used in fireworks?
Transition metals have________ compounds
Harder and more brittle than group 1 or 2.
What period is used in LEDS?
Lanthanide Series- 6th period
What period does the Lanthanide series begin with?
Elements in Lanthanide series have similar what?
similiar physical and chemical properties.
Where is Lanthanide series located?
usually found mixed together in the same locations in Earth
Because properties are so similar the mixtures are difficult to seperate, however recently they have been used in LED'S of laptops
shiny,mallerable, ductile, good conductors, high melting points and boiling points, usually solids.
Metals tend to what?
tend to form postive ions when they bond.
hammered into thin sheets.
can change the shape of it.
drawn into thin wires.
low melting and boiling points
nonmetals tend to form negative ions
elements that are not metals or nonmetals but have properties of both