Monthly archives: December, 2014

Chemistry Definitions : Basics of Atoms and Moles

Chemistry Page on Basics of Atoms and Moles 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 …

What is Organic Chemistry

 ORGANIC CHEMISTRY Organic chemistry is a branch of chemistry which involve the scientific study of structure, properties & reactions of organic species, compounds or organic materials, means matter have various forms found that contains carbon atoms. Study of structure of organic chemistry compounds includes use of spectroscopy techniques like IR Spectroscopy, Microwave Spectroscopy, NMR Spectroscopy, …

Pure Chemical substances

Pure Substances– a sample of matter, either a single element or a single compound that has definite chemical and physical properties Element– a substance that cannot be separated or broken down into simpler substances by chemical means; all atoms of an element have the same atomic number Types of pure substances:     Elements Compounds …

All about Matter ?

I. Density Matter has Mass & Volume Matter– Anything that has mass and takes up space The space an object occupies is its volume Volume—a measure of the size of a body or region in three-dimensional space The method used to determine volume depends on the nature of the matter being examined Quantity of Matter …

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 …

Chemistry 11th & 12th Formula in pdf

On this page you get, all Chemistry Formula list or links. You can also get our Chemistry Formulas in PDF for 11th & 12th Class Students. You get These chemistry volume formula and List below- 11th & 12th Classes Formula in PDF Below is the list of Chemical Formulas Resources 1. Chemistry formulas for Atoms, …

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.