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the number of appositively charged ions surrounded a certain ion in an ionic crystal lattice is known as co- ordination
the ratio among the radius of cation and the radius of anion is known as limiting radius
the amount of energy needed to convert one mole of solid substance to vapor state is known as sublimation
procedure a mock fire may be created by spilling a flammable liquid like alcohol petrol etc and lighting it at a safe place away from the equipments
to learn the use of a carbon dioxide fire extinguisher all chemical laboratories should be provided with carbon dioxide and or dry chemical fire
to surveys a lab for its fire preparednessas said earlier in this activity you are going to survey the labs of the institution where you are working
a the strength of ionic bondb stability of the ionic compoundc ease of formation of the ionic bond
objectivesafter you have completed this exercise you should be able to1 enlist all the fire extinguishers available in the labs
introduction here you have need to about the fire hazards various causes of fires and the precautions to be taken to avoid them you also learnt
the energy released when one mole of ionic crystal is produced by the combination of the corresponding gaseous ve and -ve ions brought from infinite
there are two conditionfor foramtion of anionsa high electron affinityb small sizeless charge of an atoms form anion more
the species which accepts the electrons are known as electrophiles or electrophilic reagentswhen the atom or group of atoms there in the organic
when atoms or group of atoms are added to form more saturated compound it is known as addition
procedurelocate the gas cylinders available in the labnote the colour of the cylinder to a maximum of two and exclude the lpg and bands on it if any
chemical reactivity of alkynes - hydrocarbonc xi c is less reactive as compared to the carbon-carbon double bond in the direction of electrophilic
objectivesafter doing this exercise you should be able to1 identify the contents of the gas cylinder by observing the colour code2 state the
when unsaturated compounds undergo addition reactions with free radicals it is known as free radical addition
introduction you would recall from your study of unit 11 that lpg liquefied petroleum gas and other compressed gases can pose a danger in the lab
physical properties of alkynesa it is a colourless gas it comprises a garlic odour the odour is because of existence of impurities of phosphorous and
when the attacking species during the addition reaction is nucleophilic it is nucleophilic addition reaction ex acetaldehyde
there are several conditions for formation of cat ions low ionisational potential lesser charge more atomic size of atoms forms cations easily ions
procedurea for gas supplyvisit the lpg gas store room 1 cracking plant along with your counsellor or the lab in charge and note the way supply of gas
objectivesafter completing this exercise you should be able to1 locate the source and control points of gaselectricitywater supply in the lab you
introduction gas electricity and water are integral parts of any science laboratory you would have realised from personal experience if any and in
uses of alkenesi alkenes are used for the manufacture of polythene - a plastic material ii alkenes are used for artificial ripening of fruitsiii