Chemical Families

What determines the reactivity of an element?

• Size of its nucleus

• Number of total electrons

• Number of valence electrons

• Number of shells

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2

How do you determine the number of valence electrons an element has?

• Look at its period

• Look at its group

• Look at its atomic number

• Look at its atomic mass

Atoms on which side of the periodic table will tend to GAIN electrons?

• Right

• Left

• Middle

• No atoms lose electrons

Name group 18 on the periodic table.

• alkali metals

• transition metals

• alkaline earth metals

• noble gases

What is another name for the elements in group 7?

• The Halogens

• The Oxides

• The Noble Gases

• The Alkali Metals

The family with the most reactive metals is the

• transition metals

• alkaline earth metals

• alkali metals

• lanthanide metals

Which group have properties similar to both metals and nonmetals?

• Halogens

• Metalloids

• Alkaline Earth Metals

• Noble Gases

This group reacts violently with water

• Noble Gases

• Alkali Metals

• Alkaline Earth Metal

• Nonmetals

How many valence electrons are elements trying to reach in their outer shells?

• 1

• 2

• 5

• 8

Which of the following is NOT an alkali metal?

• Li

• K

• Cl

• Cs