Introduction to the Periodic Table: Understanding Groups and Periods

How are elements arranged in the periodic table?

• By date of discovery

• By alphabetical order

• By increasing atomic number

• By decreasing atomic number

What does each period in the periodic table represent?

• A different outer shell of electrons being filled

• A different chemical property

• A different atomic mass

• A different type of element

What does the group number in the periodic table indicate?

• The number of protons

• The number of outer electrons

• The number of neutrons

• The atomic mass

Why do elements in the same group have similar chemical properties?

• They have the same atomic mass

• They have the same number of outer electrons

• They have the same number of protons

• They are in the same period

What is a characteristic property of transition metals?

• They have the same number of outer electrons

• They are highly reactive

• They do not conduct electricity

• They are found in the center of the periodic table