The Periodic Table
Periodic Trends
Periodic Table 2
Element Categories
Periodic Table 3
Atoms
100
The modern periodic table organizes elements according to this.
What is increasing atomic number?
100
Groups on the periodic table are columns or rows?
What are columns?
100
Group 17 are know as these type of elements
Halogens
100
The very reactive elements in group 1 are known as this.
What are alkali metals?
100
The horizontal rows on the periodic table.
What are periods?
100
What does the Atomic number mean?
The number of Protons, which also equals the number of electrons for a neutral atom.
200
The three classes of elements.
What are metals, metalloids and nonmetals?
200
The period numbers indicate this.
What is number of energy levels?
200
Group 1 is known as what type of metal
Alkaline earth Metals
200
Silicon, Boron, and Tellurium are examples of this class of elements.
What are metalloids?
200
Reason Noble gases are stable.
What is a full outer energy level?
200
What does the mass number mean?
The number of Protons + Neutrons. (so how much the atom weighs in total).
300
Being shiny, malleable, and conductors are properties of this class of elements.
What are metals?
300
Electrons on the outermost level are called...?
What are valence electrons?
300
The reactive elements in group 2 are known as this.
What are alkali earth metals?
300
Which groups are not used to find valence electrons
transition metals (3-12)
300
Elements in the same group share these characteristics.
What are chemical and physical properties, number of valence electrons?
300
Which part of an atom has virtually no mass and determines how the atom behaves?
Electrons
400
This class of elements are poor conductors of heat and electricity.
What are nonmetals?
400
What trend increases as you move from the middle of the periodic table to EITHER the left side or the right side in a period?
How reactive the elements are! Period 1 and Period 7 are VERY reactive!
400
The elements in group 17 are known as this.
What are the halogens?
400
What are valence electrons
the electrons on the outer most shell
400
The vertical columns on the periodic table.
What are groups or families?
400
How many Neutrons are in a Uranium atom? 
238-92=146 neutrons
500
This class of elements have properties of both metals and nonmetals.
What are metalloids?
500
What trend increases as you move right AND down on the periodic table? (hint: it means greediness)
The Electronegativity of the Elements
500
The nonreactive elements in group 18 are known as this.
What are the noble gases?
500
Which element is the exception to the OCTET RULE
He (helium)
500
Number of periods on the periodic table.
What is 7?
500
How many Electrons are there in a Uranium Atom?
92