27th October 2011 - 09:33 AM
When a chemical substance is transformed as a result of its interaction with another or energy, a chemical reaction is said to have occurred.
28th October 2011 - 04:33 AM
Chemical reaction is therefore a concept related to the 'reaction' of a substance when it comes in close contact with another, whether as a mixture or a solution; exposure to some form of energy, or both.
29th October 2011 - 06:04 AM
It results in some energy exchange between the constituents of the reaction as well with the system environment which may be a designed vessels which are often laboratory glassware.
31st October 2011 - 03:10 AM
Chemical reactions can result in the formation or dissociation of molecules, that is, molecules breaking apart to form two or more smaller molecules, or rearrangement of atoms within or across molecules.
31st October 2011 - 12:49 PM
Chemical reactions usually involve the making or breaking of chemical bonds.
1st November 2011 - 03:01 AM
Oxidation, reduction, dissociation, acid-base neutralization and molecular rearrangement are some of the commonly used kinds of chemical reactions.
2nd November 2011 - 03:08 AM
A chemical reaction can be symbolically depicted through a chemical equation.
3rd November 2011 - 06:50 AM
While in a non-nuclear chemical reaction the number and kind of atoms on both sides of the equation are equal, for a nuclear reaction this holds true only for the nuclear particles viz. protons and neutrons.
15th April 2013 - 02:33 AM
A summary or the net chemical reaction can be symbolically depicted through a chemical equation. As such, care should be exercised in intrepreting such a net reaction as to conditions necessary for intermediate reactions to proceed, and also with respect to associated properties of intermediate compounds (stability issues for example). The most appropriate medium, catalyst, time to completion and temperature ranges are not always cited in the chemical equation itself.
9th May 2013 - 10:56 AM
Reaction of a metal oxide with water produces a metal hydroxide; that is, a strong base. Reaction of a nonmetal oxide with water produces an oxyacid in which the nonmetal is in the same oxidation state as in the oxide you started with. Both of these are combination reactions, and both can be reversed by heating the products. Metal hydroxides decompose on heating to give the metal oxide and water, and oxyacids decompose on heating to give water and the nonmetal oxide in the appropriate oxidation state.