Alkaline Earth Metals
----------------------Blane Dempsey-------------------------
What are They?
Alkaline Metals have a oxidation number of +2 which makes them very reactive.They are electropositive,divalent metals,and they form oxides that react with water.
A Few Elements From the Alkaline Earth Metals
Magnesium
Magnesium is a shiny gray solid.It has a melting point of 650 degrees Celsius.It has a boiling point of 1,091 degrees Celsius.
Calcium
Calcium is soft and gray.It is also the fifth most abundant element by mass in the Earth's crust.It has a melting point of 842 degrees Celsius.
Radium
Radium is naturally occurring.Its melting point 700 degrees Celsius.Its boiling point is 1140 degrees Celsius.It has 6 isotopes.
What are They Used for
Beryllium is used to make some types of alloys.Magnesium is used for making machinery and construction.Calcium builds bones and is a nutritional system.Strontium burns bright red and is used for fireworks.Radium is radioactive and has medical properties.
Foods that include Calcium
- Cheese
- Yogurt
- Milk
- Sardines
- Fortified OJ
- Soybeans
Flame Test: Alkaline Earth Metals