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 the methods used to separate complex mixtures. The components to be separated are distributed between two phases, a stationary and mobile phase. There are ma â¦ ny types of chromatography: Liquid Chromatography, Gas Chromatography, Thin-layer Chromatography, and Paper Chromatography. Answer   ...are: -the attraction to the paper-the solubility of the pigments-the size of the particles posted by Huguito Doutre. 8 people found this useful. Edit. Share to: 1  The Periodic Table of Elements Life is sustained by a number of chemical elements.