Organization
The number of groups in the periodic table
What is 18?
The father of the periodic table
Who is Mendeleev?
The chemical symbol for Lead
What is Pb?
The chemical symbol for copper
What is Cu?
The electrons in the outer shell of the atom
What are valence electrons?
The number of periods in the periodic table
What is 7?
How Mendeleev organized his elements
What is by increasing atomic mass?
The chemical symbol W represents
What is Tungsten?
the 3 main categories of elements
metals, nonmetals and semiconductors
An atom that has gained or lost one or more electron
The horizontal rows are called
What are periods?
The English chemist who first organized the elements by atomic number
Who is Henry Moseley?
The atomic number for Se
What is 34?
Is Na likely to form a positive ion (lose electrons) or a negative ion (gain electrons)?
Positive ion
A positive ion
What is a cation?
The vertical columns are called
What are groups?
The number of elements in the modern periodic table
What is more than 100?
The average atomic mass for Barium
What is 137.327?
Is Cl likely to form a positive ion (lose electrons) or a negative ion (gain electrons)?
Negative ion (gain electrons)
A negative ion
What is an anion?
The modern periodic table organizes elements by this
What is the atomic number?
The law that states that properties of elements change periodically with atomic # of elements
What is the periodic law?
Are the properties of Cs more likely to be similar to Rb or Ba?
What is Rb? (same group share similar properties)
Which is more metallic, Ti or As?
Ti, as you move to the right, elements become less metallic
elements that can conduct electricity under certain conditions
What is a semiconductor (or metalloid)?