Into to Periodic Table Trends

Bohr Model

• Shows how subatomic particles are arranged in an atom

• Shows how compounds are arranged

• Shows how mixtures are arranged

Atomic number is

• The number of protons in an atom

• The number of neutrons in an atom

• The number of elements on the periodic table

Atomic mass is

• The number of protons in an atom

• The number of protons and neutrons in an atom

• The amount of valence electrons in an atom

Atomic radius is

• The distance across an entire atom

• The distance the valence electrons are from other electrons

• The distance from the nucleus to the valence electrons

Valence electrons are

• The inner most energy level

• The outer most energy level

• The middle energy level

Reactivity means

• That everything is relative

• That planets rotate on their axis

• The ability of atoms to bond chemically with each other

The vertical columns in the Periodic Table are called

• cousins

• groups

• periods

Each horizontal or row in the Periodic Table is called a

• group

• period

• cousins