Sulfur and iron: since this is a mixture, the sulfur retains its properties (its yellow color, for example), and the iron retains its properties (its black color, for example). These properties can be used to separate the two elements. For iron sulfide, two elements (sulfur and iron) are heated together so that they form the compound iron sulfide. Although iron sulfide contains both sulfur and iron, it is not a mixture: it is a pure substance. Both the sulfur and the iron have âgiven upâ their individual properties to become a compound.
Scoliosis can affect the normal lordotic curvature in the neck. Cervical spondylolisthesis is a major source of reversed lordotic curvature. Severe disc pathologies can facilitate a gradual loss or reversal of cervical lordosis.Vertebral irregularities, such as wedging, can definitely contribute to lordotic alteration.eversal of Cervical Lordosis Causes. The spinal curvature in the neck is constantly in flux to some degree. Congenital conditions and developmental conditions can have lasting effects on the natural degree of curvature typically demonstrated from patient to patient.
1 Injury to cervical spine may also lead to loss of cervical lordosis. 2  A whiplash while driving motor vehicle, direct trauma on the neck can all contribute to muscle spasm and loss of curvature of cervical spine. 3  Osteoporosis is another important factor that may cause abnormality in cervical spine curvature.