Science E-Portfolio for 2011. For me to share my journey of Science learning. Together, me and you, we shall step on the journey of EUREKA!
Sunday, April 24, 2011
Salts and halides
We learnt that the neutralisation process of an acid and a base produces only salt and water. The definition of salt here are ionic compounds that result from neutralisation and are composed of a cation and anion, and is thus electrically neutral. The cation is usually a metal from the acid, while the anion is usually a non-metal base. There are different types of salts formed, such as nitrite salts, base salts, acid salts etc. But the one specific one I am talking about today would be halides. Most salts are halides.The definition of halides would be a compound consisting of a halogen atom and another which is less electronegative than the halogen. The latter is usually a metal also. Examples of these would be sodium chloride, silver bromide etc. Like all salts, the cation is placed at the front of the chemical name. The halogen in this case is called the halide ions, which are negative. Thus these are usually called metal halides, which can be used in energy-efficient lamps. I came across this term in the powerpoint for revision and because it seemed interesting , I went to find out more on it. These has greatly improved my overall understanding on salts and I am glad that I learnt something more out of this.
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