STATES OF MATTER Matter is made up of very tiny particles such as atoms, molecules and ions. Matter exists in […]
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Charge flow during electrolysis The coulomb is the electrolytic unit of charge. A current of one ampere is the rate […]
The passage of electricity through the electrolytes in their molten or dissolved state can cause chemical changes under suitable conditions. […]
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Electrolysis
When an electric current is passed through an electrolyte solution, the ions of the electrolyte undergo chemical changes at the […]
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Ionic theory
To account for the phenomena of electrolysis the Ionic Theory was put forward by Arrhenius in 1880. The theory states […]
We are familiar with the balancing of chemical equations by inspection method. However, inspection method may not be useful for […]
In our daily life we come across processes like rusting of iron articles, fading of the colour of the clothes, […]
PERIODIC TRENDS IN PHYSICAL PROPERTIES Most of the properties of the elements such as atomic volume, atomic size, ionization enthalpy, electron […]
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Periodicity
PERIODICITY THE NEED FOR CLASSIFICATION OF ELEMENTS https://www.youtube.com/embed/P6DMEgE8CK8Before the beginning of eighteenth century, only a very few elements were known […]
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compounds of sulphur with hydrogen
Hydrosulphuric acid (H2S). This substance is a gas having the composition expressed by the formula H2S and is commonly called hydrogen […]