History
Groups and Periods
Types of Elements
Properties
Misc.
100
Who was Dmitri Mendeleev?
Russian Scientist who developed the first periodic table.
100
Vertical columns in the periodic table are called this...
Groups
100
Most of the periodic table is made up of these type of elements.
Metals
100
Malleability is a property of what type of element?
Metal
100
How many valence electrons are in Phosphorous (P)?
5
200
How did Mendeleev arrange the elements in his periodic table?
In order of increasing atomic mass
200
Horizontal rows on the periodic table are called this...
Periods
200
Group 1 Elements are also known as these types of metals
Alkali Metals
200
Most of these types of elements are gases at room temperature.
Nonmetals
200
How many occupied energy levels does Magnesium (Mg) have?
3
300
How are the elements in today's periodic table arranged?
According to increasing atomic number.
300
Group numbers can be used to determine the number of these in an atom of an element.
valence electrons
300
Group 2 elements are also known as these.
Alkaline Earth Metals
300
These types of elements can have properties of metals or nonmetals depending on outside conditions.
Metalloids
300
These metals fit in the large block in the periodic table that separates Group 2 from Group 3
Transition metals
400
How did early scientists group elements when developing the first periodic tables?
Based on their properties
400
Period numbers indicate the number of these in an atom of an element.
Occupied energy levels
400
Group 7 elements are also called this...
Halogens
400
This property increases as you move down a group because energy levels are being added.
atomic size/radius/mass
400
These metals are also known as the Lanthanides and Actinides.
Inner transition metals
500
Describe the trends in properties that emerge, both down groups in across periods, when you arrange elements by increasing atomic number.
Properties are similar within groups and there are repeating patterns in properties as you move across the periods.
500
List two elements that have similar properties to Ca.
Be, Mg, Sr, Ba, Ra
500
These elements have 8 valence electrons and are virtually nonreactive due to their natural stability.
Noble gases
500
The properties among these types of elements vary greatly
non-metals
500
Determine the outer most energy level and the number of valence electrons in Selenium (Se)
n = 4; valence electrons = 6
M
e
n
u