Group 1 Elements

What are the elements in Group 1 known as?

How many electrons are in the outer shell of all elements in Group 1?

Select the elements that are in Group 1.

• Potassium

• Calcium

• Magnesium

• Lithium

• Sodium

The Group 1 elements are all very ____________.

• reactive

• unreactive

Select the properties of the Group 1 elements.

• Silvery solids

• Very hard metals

• Very soft metals

• High density

• Low density

The reactivity of the Group 1 elements ______________ as you go down the group.

• decreases

• increases

• does not change

Sodium is less reactive than which Group 1 elements?

• Lithium

• Potassium

• Rubidium

• Caesium

The melting and boiling points of the Group 1 elements ______________ as you go down the group.

• decrease

• increase

• do not change

Potassium has a lower boiling pointthan which Group 1 elements?

• Lithium

• Sodium

• Rubidium

• Caesium

What gas is produced during a reaction between an alkali metal and water?