Chemistry One-Liners for various competitive examinations
Thank You for landing the Chemistry section page.
Here are some important Chemistry one-liners for students competing for various exams
Watch some of the important Chemistry Bits below.
1-Ionisation enthalpy- It is the minimum energy required to remove an electron from an isolated gaseous atom of an element to form a positive ion.
2-Electronegativity- It is the ability of an atom to attract the shared pair of electrons towards it.
3-Electron gain enthalpy- It is the energy released by an element when an extra electron is added to its neutral gaseous atom.
4-REDOX REACTION- A reaction which involves oxidation and reduction occurring simultaneously together are called redox reaction.
5-Batteries- These convert chemical energy into electrical energy. Two types of batteries are used, i.e. primary and secondary
6-Fuel Cells- These cells convert energy from the combustion of fuels such as Hydrogen, Carbon Monoxide, Methane directly into electrical energy
7-A catalyst is a substance which alters the rate of reaction. Catalysts are specific in their action. Its main function is to decrease the activation energy.
8- Metals are generally good conductors of heat and electricity
9-Alloys are homogeneous mixtures of metals and cannot be separated into their components by physical methods
10-The bond formed by the transfer of electrons from one atom to another is called electrovalent bond and the compound is called electrovalent compound or an ionic compound.
11-The phenomenon in which a substance mixes with another because of molecular motion, even against gravity is called diffusion
12-The process of separation of various constituents/ fractions of petroleum is known as refining.
13-Urea was the first organic compound prepared in the laboratory. Urea was prepared by Wohler (1828) from inorganic compound i.e. ammonium cyanate
14-Acetic acid was the first organic compound synthesized from the elements by Kolbe
15-Biochemical Oxygen Demand (BOD) is the total amount of oxygen (in mg) required by microbes to decompose the organic matter present in 1L of the water sample.
Watch more Chemistry here
Watch Current Affairs section for here
Facebook Comments Box
(Visited 46 times, 1 visits today)