Periodic Table Basics

On the periodic table, Periods are

• Horizontal rows

• Vertical columns

On the periodic table, Groups (also known as Families) are

• Horizontal rows

• Vertical columns

What is a valence electron?

• Electrons in the first energy level

• Electrons in the second energy level

• Electrons in the outer level

• Total number of electrons

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

The period number tells you the number of _______ that an atom has

• valence electrons

• energy levels

• total number of electrons

• physical properties

The group (or family) number tells you the number of _______ that an atom has

• valence electrons

• energy levels

• total number of electrons

• physical properties

Most of the elements on the Periodic Table are

• metals

• nonmetals

• metalloids

• noble gases

Choose the elements that are metals

• Potassium

• Aluminum

• Bromine

• Oxygen

• Gold

Which element is a metalloid?

• Calcium

• Mercury

• Boron

• Argon

Which elements are nonmetals?

• Hydrogen

• Xenon

• Copper

• Silicon

• Oxygen

Calcium has how many valence electrons?

• 1

• 2

• 4

• 20

Tags

NGSS.HS-PS1-1