Alkali and Alkaline Earth Metals

Groups 1 and 2: Hydrogen, Alkali, and Alkaline Metals

Period Table Groups

Alkali Metal Basic Properties:

• Form cations and have a +1 charge

• Elements are: lithium, sodium, potassium, rubidium, cesium, and francium.

• Sodium is most abundant alkali metal

• Sodium is also the 6th most common element in the earth's crust.

Multiple Choice

Which alkali metal is the most abundant?

• lithium

• sodium

• cesium

Physical Properties

• Conduct heat and electricity

• Bright metallic luster on freshly cut surfaces

• Low densities

• Very soft at room temperature

Chemical Properties

• One electron in the outermost energy level

• Donate electrons to be stable

• React easily with water

• Highly reactive and must be stored in oil

Multiple Choice

What do alkali metal react easily with?

• salt

• metals

• water

Uses of Alkali Metals

• Sodium is used to make baking soda, soap, rayon, and paper.

• Salt substitutes use potassium

• Potassium is used to produce fertilizer, soap, glass, explosives, and fireworks

• Rubidium found in small quantities in tea and coffee.

• Cesium is found in atomic clocks

• Lithium is found in battery cells

Multiple Select

Which two alkali metals are used to make soap?

• sodium

• cesium

• potassium

• lithium

Alkaline Earth Metals

• Solid at room temperature

• Metallic properties

• Denser and harder metals

• High melting points

• Forms cations with a +2 charge

• Alkaline earth metals are: beryllium, magnesium, calcium, strontium, barium, and radium

Multiple Choice

Which group of metals are solid at room temperature

• hydrogen

• alkali

• alkaline

Physical Properties

• Bright silvery color or white

• Quickly oxidize to a dull gray or yellow color

• Higher densities and hardness

• All alkaline-earth metals are malleable

Chemical Properties

• They donate two electrons when they combine with nonmetals

• Elements at the bottom of the group are most reactive

• Beryllium has not chemical reaction with water

• Magnesium reacts with steam

• Calcium reacts with vigorously with cold water

Alkaline Earth Metal Uses

• Beryllium used in x-ray tubes

• Magnesium is used in alloys, for airplanes, cars, and boats

• Magnesium is used to produce Epsom salt, magnesium hydroxide used in milk to soothe your stomach

• Calcium is used to produce limestone for buildings

• Strontium is used for fireworks for the color red

• Barium is used in fireworks, rat poisoning, rubber, and linoleum

• Radium is used to treat certain cancers

Multiple Select

Which element are from the alkaline earth metal groups?

• Lithium

• Calcium

• Barium

• Radium

Multiple Choice

Which metal group is solid at room temperature?

• alkali metals

• alkaline metals

• transition metals

Multiple Choice

Which metals conduct good heat and electricity?

• alkaline metals

• metals

• alkali metals

Multiple Choice

Which metals react easily with water?

• alkali

• alkaline

• transition

Multiple Choice

Which element is used to make alloy material for planes, cars, and boats?

• Calcium

• Magnesium

• Potassium

Multiple Choice

What is the first element in the alkali metal group?

• Hydrogen

• Lithium

• Sodium

Multiple Choice

What is the element name for this symbol Na?

• Sodium

• Nondium

• Nadium

Multiple Choice

What is the name of the element with this symbol Cs?

• Calcium

• Cesium

• Carbon

Multiple Choice

Which element has the atomic number 37?

• Rubidium

• Strontium

• Barium

Multiple Choice

Which metals have a high density and hardness?

• metals

• alkali

• alkaline

Poll

Which percentage did you understand and learn about groups 1 and 2 from the periodic table?

• 25%

• 50%

• 75%

• 100%

• I need to review and study more