Organization of the Periodic Table

How are the elements in the periodic table arranged?

• by the number of neutrons

• by the atomic number of an element

• by the atomic mass of an element

The horizontal rows of elements in the periodic table are called

• Families

• Groups

• Periods

• Elements

________ are the COLUMNS on the periodic table and are organized by similar properties.

• Classifications
• Groups
• Periods
• Elements

Tags

NGSS.HS-PS1-2

Atoms with similar properties are most likely located...

• in the same period.

• in the same group or family.

Tags

NGSS.HS-PS1-1

Elements in the same period have similar characteristics.

• True
• False

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

What does the atomic number of an element tell you?

• the number of neutrons

• the number of valence electrons

• the number of electrons

• the number of protons

What is the number of protons that atoms of the element in this image contain?

• 14

• 7

• 15

• 18

Tags

NGSS.MS-PS1-1

Elements in a period

• are arranged alphabetically.

• have identical properties.

• belong to the same family.

• have the same number of electron shells.

No two elements have the same atomic number.

• True

• False

The chemical symbol of an element

• tells the total number of protons and neutrons in the nucleus.

• is a letter or letters that stand for the name of the element.

• are pictures that stand for the element.