Chemistry: Principles and Reactions

Terms definition

Chemical change

This is a method that leads to a transformation of a single put of chemical matter to a new one. The best example which can be used to explain chemical change is the burning (combustion), rusting of an iron saucepan, mixing sodium and hydrochloric aid and cooking an egg.

Precipitate

This is a type of solid that creates out a solution. In this case one can mix two solutions (clear), for instance; sodium chloride and silver nitrate (NaCl, AgNo3). In chemical form the results are going to be as follows; NaCl + AgCl _ NaNo3 + AgCl. In most of the cases the precipitate is likely to form since are insoluble in fluid.

A double substitution reaction

This is a compound (chemical) reaction that involves two or more reactant ionic compounds, where ions are exchanged to create two new products (compound) that has the same ions. A good example of a double reaction is where the silver gained its nitrite ions from sodium chloride ions. Chemical reaction is going to be as follows; NaCl + Ag No3 – NaNo3 + AgCl.

Bunsen burner

A Bunsen burner is common used equipment (laboratory) that helps to produce a single open flame that is commonly used for sterilization, heating and burning. When the collar is not closed, air will enter the chimney and acts as if there is an addition fuel with a new flame. The flame will be in a yellow form. On the other hand when the collar is not opened, there is absence of air and therefore the flame will be blue in color. The more we open the knob, the more gas used and realized in the air. In Bunsen burner the hottest place is immediately above the inner cone.

Reference

Hurley C.N.and Master ton W.L. (2008). Chemistry: principles and reaction – cengagebrain.com

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