Final answer:
Alkaline earth metals such as magnesium and calcium have various uses including in flares, fireworks, alloys for transportation, antacids, and construction. These elements are also abundant in the earth's crust.
Step-by-step explanation:
The alkaline earth metals include beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra). These metals are known for their reactivity and distinctive ability to form basic oxides when combined with water. They are less reactive than their group 1 counterparts, the alkali metals, but still participate readily in chemical reactions. Alkaline earth metals are versatile and find use in various applications due to their chemical properties.
- Magnesium is used in flares and fireworks for its bright-burning property. It is also alloyed with aluminum to make lightweight yet sturdy materials for airplanes, missiles, and rockets.
- Magnesium hydroxide is employed as an antacid to neutralize excess stomach acid.
- Calcium compounds are a crucial component of cement and are widespread in the construction industry. Calcium is also used in deicing roads as calcium chloride and serves as a white pigment in paints and toothpaste.
Calcium and magnesium are notably the fifth and sixth most abundant elements on Earth. These metals are integral to the global economy and infrastructure, showcasing the importance of group 2 elements in everyday life.