E cells must be positive for galvanic cells, which have to be spontaneous in order for them to work. To explain this phenomenon, you can use the... View Article
Hydrogen Bonds and Van Der Waals Interactions. Hydrogen bonds are known as weak bonds because under normal biological conditions, they are easily... View Article
Cycloalkanes are full of single C-C bonds and are also molecules that are saturated. Bromine water can not decolourize them. Alkanes are... View Article
The metallic character increases in a group and decreases as we shift from left to right over a period of time. If you move from left to right or... View Article
K2Cr2O7 is Diamagnetic. Through observing the electron structure, the magnetic properties of a material can be determined: if it has unpaired... View Article
Each of the two or more chemical formula complexes, such as propyl alcohol and isopropyl alcohol, which vary structurally in the order in which... View Article
All ideal solutions obey Raoult's Law. An ideal-dilute solution is a true solution that is diluted sufficiently to obey the law of Henry for each... View Article
The exterior shell of an atom is called the shell of valence. It will break away from the parent atom to become what is called a free electron as... View Article
Unsaturated molecules are called alkenes. It is possible to use a basic bromine water test to know the difference between an alkane and an... View Article
Natural gas (i.e. methane) or LPG (liquefied petroleum gases such as propane and butane) or petroleum naphtha was first converted into gaseous... View Article
The presence of the ortho- and para-position nitro group withdraws electron density from the benzene ring and thereby promotes the haloarene... View Article
In ammonia, the nitrogen atom has a lone pair of electrons that can be quickly donated to the necessary Lewis acid. Ammonia will thus serve as a... View Article
In order to minimise wavelengths and maximise energy and frequency, the electromagnetic spectrum is usually categorised into seven regions. Radio... View Article
The alkali metals are so called S block because they form alkalies when they react with water. Alkalies, including sodium hydroxide and potassium... View Article
Those metals which have partially filled d-orbitals are transition metals. Zinc has completely filled d-orbital and should thus not be a metal... View Article
If by filtering the beam with specialised materials, the electric field vectors are limited to a single plane, then the light is referred to as... View Article
The periodic table is important because in one easy-to-use guide, it is structured to include a lot of details about elements and how they relate... View Article
As it belongs to the VI Periodic Table group, Sulphur has six valence electrons. It thus has maximum valency. Valency is the strength of an... View Article
There are 18 groups, according to the modern Periodicals Table. There are eight major groups in the periodic table: 1, 2, 13, 14, 15, 16, 17 and... View Article
The elements from atomic number 57 to 71 are called Lanthanides. They are called lanthanides, since lanthanum is chemically identical to the... View Article
