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q illustrate chemical nomenclatureanschemical nomenclature is the system of names that chemists use to identify compounds precisely the systematic
q use of reactants in excessansconsider a recipe for pancakes that calls for 2 cups of pancake batter mix and 1 cup of water the result of this
q what is stoichiometryansas you know a chemical equation is like a recipe each of the different ingredients combine in certain ratios to form the
q how to balance a redox equationansredox equations may be written and balanced by the ionic half-reaction method lets use the half-reaction method
q how to change in oxidation number in redox reactionsansin reduction-oxidation or redox reactions atoms undergo changes in their oxidation
q what is oxidation numbersanschemists find it useful to describe the oxidation states of an element by means of oxidation numbers the oxidation
q how do you determine the oxidizing or reducing agentansa substance that oxidizes another substance is called an oxidizing agent one that reduces
q show redox reactions as electron transferansoxidation is a process where electrons are lost and reduction is a process where electrons are
q illustrate law of equilibrium and equilibrium constantsansthe general equation for a reversible reaction is given byaa bb -gt cc ddthe law of
q show the effect of pressure on chemical equilibriumansin gases the pressure is proportional to the number of moles of molecules reactions
the effects that temperature has on the equilibrium position of a reaction can also be explained by using le chteliers principlerecall that in an
q show the effect of concentration on chemical equilibriumanswhen more of one of the chemicals is added to the reaction more collisions take place
q show the factors affecting equilibrium positionansthe term equilibrium position refers to the relative proportions of reactants and products in the
q explain le chteliers principleansconsider the equilibrium reaction ofa b -gt c dthe forward reaction occurs when a and b combine to form c and da
q what do you know about chemical equilibriummany chemical changes are reversible and will proceed towards an equilibrium instead of going to
q what is activation energyanscolliding molecules which overcome the activation energy form an activated complex in the activated complex original
q explain collision theoryanswhy do some reactions take place faster than others what actually happens in a chemical reaction consider a gaseous
q illustrate metallic bondingansa metal is crystalline because it has a regularly repeating closely packed structure in a metal though this closely
q show electron dot diagrams for covalent bondsanselectron dot diagrams for covalent bondsin covalent bonds atoms share electrons in such a manner
qwhat do you mean by electron transfer and ion formationanspositive and negative ions do not form independently the loss and gain of electrons means
q how to determine electron affinityanselectron affinity is the measure of an atoms tendency to form a negative ionelectron affinity can be measured
q explain ionization energyanswhen an electron is removed from an atom the atom has been ionized therefore the energy required to remove an electron
q what do you mean by chemical bondingansatoms react chemically by losing gaining or sharing electrons chemical bonds are the attractive forces that
q explain the use radioactive nuclidesansradioactive elements are easily found because they emit radiation they can be used as tracers to show what
q briefly describe problems and applications of radioactivityansall radiation electromagnetic as well as the kind from nuclear decay takes its toll