Teenage Depression statistics show that teen depression is a common problem 1  : About 20 percent of teens will experience teen depression before they reach adulthood. 2  Between 10 to 15 percent of teenagers have some symptoms of teen depression at any one time.
1. alkaline-relating to or containing an alkali; having a pH greater than 7; alkaline soils derived from chalk or limestone. alkalic. chemical science, chemistry-the science of matter; the branch of the natural sciences dealing with the composition of substances and their properties and reactions.
Alkaline earth metals have only two electrons in their outermost electron layer. Alkaline earth metals get the name 'alkaline' because of the basic nature of the compounds they form when bonded with oxygen. Properties and Characteristics. Alkaline earth metals in their pure forms are generally shiny and silvery.