The basics
The first Energy Level (Electron Shell) can hold this many electrons.
2
Elements in a period have the same number of this, but different properties
energy levels / electron shells
Elements in this group are unreactive gases
Group 18 / Nobel Gases
A row on the periodic table is called this
Period
Total number of periods on the table
7
increases from left to right and top to bottom on the period table
atomic number and atomic mass
This group is the most reactive nonmetals on the table. Name the group and family.
Group 17 / Halogens
Most elements at room temperature are this state of matter
Solid
Number columns/groups on the periodic table
18
Elements within the same group or family have similar _____________ .
properties (physical and chemical)
The elements in these 2 groups are metals and the most reactive families on the periodic table. Name these 2 families and the location on the table.
Alkali Metals - Group 1
Alkaline Metals - Group 2
At room temperature, the left side of the periodic table is mainly solid metals whereas the far right are gases. How many liquids can be found?
2 (mercury and bromine)
Every Energy Level (Electron Shell) after the first one can hold this many electrons.
8
Location of the synthetic, man-made elements.
Periods 6 and 7 that are separated at the bottom of the periodic table.
Separate metals and nonmetals
Found on the OUTERmost/Highest energy level/shell
Valance Electrons
How to find the number of neutrons
subtract the atomic number (number of protons) from the atomic mass.
Hydrogen is a Nobel Gas. Is this element REACTIVE or NONREACTIVE?
reactive
Common property of elements within the same column/group.
they have the same number of electrons in their outer energy level.
Metal, Metalloid, or NonMetal