Science

Sodium Nitrate Definition Sodium nitrate is a poisonous, white, crystalline compound used in solid rocket propellants, in matches, as a fertilizer, and in curing meat.…

Potassium Nitrate Definition Potassium nitrate (KNO3) is a transparent, white, crystalline compound and strong oxidizing agent. It is used in gunpowder and fireworks, in making…

Calculating the Area of a Parallelogram The area of a parallelogram can be found by multiplying the base times the height. It means the number…

About Azurite Definition Azurite is a soft stone, named for its deep “azure blue” color. It is a copper carbonate mineral found in the upper…

Lens (Anatomy) Definition Lens is a transparent structure behind the iris of the eye that focuses light entering the eye on the retina. The lens…

Potash Definition Potash is any of several chemical compounds that contain potassium, especially potassium carbonate (K2CO3), which is a strongly alkaline material obtained from wood…

Copper Sulfide Definition Copper sulfide is a crystalline solid used as a semiconductor and in photo optic applications. It is the black, bluish black, or…

Blood Vessel Definition Blood vessel is an elastic tube or passage in the body through which blood circulates; an artery, a vein, or a capillary.…

Copper Definition Copper is a reddish-brown, ductile, malleable metallic element that is an excellent conductor of heat and electricity. It is the 29th element on…

About Fascia Definition Fascia is the body’s connective tissue, it is a head to toe, inside to out, all-encompassing and interwoven system of fibrous connective…

Somnolence Definition Somnolence occurs when a person has a strong desire for sleep. It is also a term that is used to describe excessive sleepiness…

About Silver Definition Silver is a soft, shiny, white metallic element that is found in many ores, especially together with copper, lead, and zinc. It…