Periodic Table

The periodic table has __ periods.

• 18
• 8
• 2
• 7

Group 18 elements are known as the _____ _____ and have full valence shells.

• royal gases.
• supreme solids.
• noble gases.
• legit liquids.

Tags

NGSS.HS-PS1-1

Elements in the same ________ are more chemically similar.

• group
• period
• club
• table

The elements in this group have 5 valence electrons and include elements N, P, and As.

• Group 5
• Group 1
• Group 18
• Group 15

The elements in this group only have 1 valence electron and include Li, Na, and K. 

• Group 11
• Group 1
• Group 3

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Rows on the period table are called _____ while columns are called _____.

• groups, families
• groups, periods
• periods, groups
• families, groups

Which group of the periodic table is composed of inert (not reactive)  gases?

• alkali metals
• alkaline earth metals
• halogens
• noble gases

What's a valence electron?

• electrons in the second energy level
• electrons in the outermost energy level
• the atomic number
• electrons in the first level

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

Which of these atoms will be more reactive and why?

• Atom A, because it has fewer electrons.

• Atom A, because it has unequal charges.

• Atom B, because it has one valence electron.

• Atom B, because it more neutrons.

The vertical (up and down) columns in the Periodic Table are called

• groups

• towers

• periods

• atomic numbers

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2