key concepts 1

n - neutron U - 235 Uranium Ba - Barium Kr - Krypton E - Energy Note : The number of neutrons released in a uncontrolled chain reaction of U-235 nuclei is given by 3 n where n = 1,2,3,..... A Schematic Diagram Showing Essential Steps in a Chain Reaction Based on Fiss..

Diagonal relationship - It refers to the similarly in the properties of some of the elements of 2nd period to diagonally opposite elements of 3rd period. The pair of elements showing diagonal resemblance are: LiMg, Be..Al and B.S..

Uncertainty Principle - It is not possible to measure simultaneously both the position and velocity (or momentum) of a microscopic particle with absolute accuracy or certaint..

About how many inches long is the key? => 2 inches or 1 inch or 3 inches..

Which tower has the same number of keys as one on the top? => Tower 2 or Tower 3 or Tower 1 or Tower 4..

Identify the best estimate for the length of a key. => about 1 yard or about 1 inch or about 1 foot..

Since it is not possible to calculate the weight of particles individually, a collection of such particles called mole is taken for all practical purposes. Avogadro discovered that under standard conditions of temperature and pressure, (1atm and 273K) a sample of gas occupies a volume of ..

Mole Concept - In chemistry, the term mole represents a pile or mass of atoms, molecules, ions or electrons. Just as common man measures quantity in terms of kilograms or dozens, a chemical scientist deals with a 'mole' of atoms, molecules, ions or electrons. Mole is defined as the amount..

In chemistry the term mole represents a pile or mass of atoms, molecules, ions or electrons. Just as common man measures quantity in terms of kilograms or dozens, a chemical scientist deals with a 'mole' of atoms, molecules, ions or electrons. A mole is the amount of a substance that contains the s..

Since it is not possible to calculate the weight of particles individually, a collection of such particles called mole is taken for all practical purposes. Avogadro discovered that under standard conditions of temperature and pressure, (1atm and 273K) a sample of gas occupies a vo..