Category «CHEMISTRY TERMINOLOGY»

Working with the Properties & Changes of Matter

Working with the Properties & Changes of Matter Chemical- any substance that has defined composition Everything you see is made up of chemicals Even things you cannot see are made up of chemicals Some exist naturally Some are manufactured Chemical Reaction- the process by which one or more substances change to produce one or more …

Transition state theory or Activated complex theory

Transition state theory or Activated complex theory It is more modern theory proposed in 1932 by Pelzer & Manger later developed by Erying and colleagues. 1. Rate equation formation using the statistical mechanics to describe equilibrium between activated complex and reactant. 2. Rate equation formulation as per thermodynamical state function to describe transition state complex …

Transition Metals in Periodic Table

Transition Series of Periodic Table for 11th 12th BSc Msc Chemistry          What is Transition Metals? As per IUPAC system, transition metals are the elements of periodic table which have partially filled d sub shell or gives cations with incomplete d sub shell, is called transition metal. But many scientist says simply any metal which …

What is Adsorption ?

What is Adsorption ? Adsorption: – The accumulation of molecular species at the surface rather than bulk of solid or liquid is called Adsorption. Mechanism of Adsorption Inside theAdsorbent (in bulk) the force acting between the particles are mutually balanced but on the surface, the particles are not surrounded by atoms or molecules of their …

Spin Multiplicity Rule

Definition of spin  Multiplicity Rule According to spin Multiplicity Rule ” transition between states of different multiplicity, S, are forbidden. It is a selection rule for electronic transition in complexes. And another selection Rule is Laporte Selection Rule. 

Laporte Selection Rule

Laporte Selection Rule

Laporte selection rule was given by Otto Laporte. He was a famous German born American physics scientist. He made great contributions in the field of science like in spectroscopy, fluid dynamics, quantum mechanics and electromagnetic wave propagation theory. In Spectroscopy, his name is given to selection rule as Laporte rule. Definition of Laporte Selection Rule …

Bent Rule

Definition of Bent Rule As per bent Rule the more electronegative constituent prefer the hybrid orbitals having less s character & the more electropositive constituent prefer the hybrid orbitals having more s  character, is bent Rule.jss 

what is molarity ?

What is molarity?  Molarity is also known as molar concentration, it is the ratio of moles of substance to volume in litre.Where mole is weight in gram devided by molecular weight.Molarity is chemistry terminology. Molarity (M) :-                                  No. of moles of the solute  / Volume of the solution in litre.     M = strength in gram …

DEBYE HUCKEL THEORY

Debye Huckel Theory This theory is based on 3 assumptions that how the ions act in the solution 1. in the solution electrolytes completely dissossiate into ions 2. electrolyte solution are very dilute of order of 0.01M 3. each ion surrounded by ion of the opposite charge on the average.

Project on Barcode

Project on Barcode Project on Barcode What is Barcode ? Barcode is machine readable representation of information related to product to which it is attached. Types of Barcode ? Barcodes are of two types i.e. 1D and 2D 1.       One dimensional (1D) Barcode :                                                              It is also known as linear barcode. Originally it is …

Chemistry Notes Benzene

introduction Benzene is an organic compound with molecular formula C6H6. Benzene molecule is made of six carbon atoms joined in a ring, with one H-atom attached to each C-atom. Because of its molecules contain only carbon and hydrogen atoms, benzene is also known as a hydrocarbon. it is a natural constituent of crude oil, it …

Symbol used in chemistry and Formula used in chemistry

Symbol used in chemistry d= densityv= volumem= massCp= specific heatq= heatΔT= change in temperature K= KelvinC= Celsius Formula used in chemistry d=m/vv=m/dm=v*dCp= q/ (m* ΔT)q= Cp*m*ΔTΔT= q/Cp*mm= q/Cp* ΔTTf= q/m*Cp +TiTi= q/m*Cp +Tf (then divide everything on the right by negative 1 [-1]) **this formula isn’t used as often as Tf** t(C°)= T(K) – 273.15K  …

Atoms and Moles

Section 1 Substances are Made of Atoms I. Atomic Theory -As early as 400 B.C., an atomic theory existed that stated that atoms are the building blocks of all matter-Democritus was the first scientist who believed in atoms (Greek)-It wasn’t until the 1800s that atomic theory was revised based on scientific observations  A. Law of …