Chalk Chromatography

Introduction Chromatography is an analytical technique which uses the principle of selective adsorption. In this method, a mixture of substances is allowed to pass through a solid that will act as an adsorbent (chalk in the case). some substances in the mixture are more strongly adsorbed on the chalk than others. As they solvent moves…

How To Dyeing Of Eggs

Introduction Egg dyeing is a simple and common activity. Egg are dyed for Easter celebrations as well as for other decorative purposes.The Chinese will dye their eggs red during birthdays to signify good luck. When an infant reaches one month old, eggs dyed red will be distributed to all relatives. What is the chemistry behind…

Edible Indicators

Acids are compound that produce hydrogen ions (H+) when dissolved in water. An acid can be classified as weak or strong depending on the concentration of Hydrogen ions in solution. The strength of the acid is indicated by the scale which defined as the negative logarithm of the hydrogen ion concentration. The smaller number, the…

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