Persistent behavior problems canaffect educational attainment, proper social development,employment, and the likelihood of criminality.The causes of childrenâs mental health problems arevaried and complex and include genetic makeup, childpoverty, maternal depression, and poor or abusivecare.
Paper chromatography is a technique for separating and identifying mixtures that are (or can be) coloured. It has been largely replaced by thin layer chromatography, but is still a powerful teaching tool. Double-way paper chromatography, also called 'two-dimensional chromatography', uses two solvents and rotates the paper 90Â° in between.
Chromatography is a pretty accurate description of what happens to ink on wet paper, because it literally means color writing (from the Greek words chroma and graphe). Really, though, it's a bit of a misnomer because it often doesn't involve color, paper, ink, or writing.hromatography is actually a way of separating out a mixture of chemicals, which are in gas or liquid form, by letting them creep slowly past another substance, which is typically a liquid or solid.