EPRI: Chemistry Exam Questions and
Answers
Properly Controlled Power Plant Chemistry Program - Answers -The following are the
purpose of:
-Protect the reactor coolant system pressure boundary integrity
-Protect fuel cladding integrity and fuel performance
Minimize out-of-core radiation fields
-Minimize corrosion of all secondary plant and auxiliary system components
General Atomic Structure - Answers -Dense nucleus includes protons (+) and neutrons
(0) surrounded by dense cloud of electrons in describe orbits (known as shells)
ion - Answers -atom that is electrically neutral; aka = amount of protons & electrons
Cations - Answers -positively charged ions
Anions - Answers -negatively charged ions
properties - Answers -atoms with same # of electrons in outermost shell will have similar
______
8 - Answers -atoms want to complete their outermost shell by having how many
electrons(in the outermost shell)?
2 - Answers -how many electrons does the first shell of an atom need to be complete?
Positive Valence - Answers -measure of number of electrons that an atom can give up
to leave a completed outermost shell
Negative Valence - Answers -measure of number of electrons that an atom can take in
to have a completed outermost shell
4 - Answers -Atoms don't want to give up/take in more than how many electrons?
Ionic Bond - Answers -What type of chemical bonding transfers electrons?
Covalent Bond - Answers -What type of chemical bonding shares electrons?
, Balanced - Answers -All reactions must be _________; reactants must be accounted for
in products
Reduction Reaction - Answers -What type of chemical reaction is when a substance
gains electrons? AKA GER
Oxidation Reaction - Answers -What type of chemical reaction is when a substance
loses electrons? AKA LEO
Gains Electrons Reduced - Answers -GER stands for
Loses Electrons Oxidation - Answers -LEO stands for
Reducing Agent - Answers -The agent that supplies electrons is the?
Oxidizing Agent - Answers -The agent that takes away lost electrons is the?
Half-Cell Reactions - Answers -What type of chemical reaction can show how electrons
transfer into and out of individual reactants/ products?
Temperature, Catalyst, Concentration - Answers -What are the 3 factors that affect
reaction rates?
increases - Answers -What happens to the reaction rate if you increase the
temperature?
reaction - Answers -The presence of a catalyst in a chemical reaction increases the rate
at which ________ occurs?
Catalyst - Answers -What forms an intermediate product with 1+ of reactants which
lowers activation energy for other reactants; intermediate product breaks up and
releases uncombined ______ and combined products?
Original - Answers -Increasing concentration of reactant also results in greater chance
of other reactants colliding with ______ reactant
Concentration - Answers -rate of chemical reaction is directly proportional to _________
of its reactants
Acids - Answers -a compound that increases concentration of positively charged
hydrogen ions (H+) (and hydronium ions (H30+)) when dissolved in water
Bases - Answers -a compound that increases concentration of negatively charged
hydroxyl ions when dissolved in water (OH-)
less - Answers -Acids have a pH balance ______ than 7
Answers
Properly Controlled Power Plant Chemistry Program - Answers -The following are the
purpose of:
-Protect the reactor coolant system pressure boundary integrity
-Protect fuel cladding integrity and fuel performance
Minimize out-of-core radiation fields
-Minimize corrosion of all secondary plant and auxiliary system components
General Atomic Structure - Answers -Dense nucleus includes protons (+) and neutrons
(0) surrounded by dense cloud of electrons in describe orbits (known as shells)
ion - Answers -atom that is electrically neutral; aka = amount of protons & electrons
Cations - Answers -positively charged ions
Anions - Answers -negatively charged ions
properties - Answers -atoms with same # of electrons in outermost shell will have similar
______
8 - Answers -atoms want to complete their outermost shell by having how many
electrons(in the outermost shell)?
2 - Answers -how many electrons does the first shell of an atom need to be complete?
Positive Valence - Answers -measure of number of electrons that an atom can give up
to leave a completed outermost shell
Negative Valence - Answers -measure of number of electrons that an atom can take in
to have a completed outermost shell
4 - Answers -Atoms don't want to give up/take in more than how many electrons?
Ionic Bond - Answers -What type of chemical bonding transfers electrons?
Covalent Bond - Answers -What type of chemical bonding shares electrons?
, Balanced - Answers -All reactions must be _________; reactants must be accounted for
in products
Reduction Reaction - Answers -What type of chemical reaction is when a substance
gains electrons? AKA GER
Oxidation Reaction - Answers -What type of chemical reaction is when a substance
loses electrons? AKA LEO
Gains Electrons Reduced - Answers -GER stands for
Loses Electrons Oxidation - Answers -LEO stands for
Reducing Agent - Answers -The agent that supplies electrons is the?
Oxidizing Agent - Answers -The agent that takes away lost electrons is the?
Half-Cell Reactions - Answers -What type of chemical reaction can show how electrons
transfer into and out of individual reactants/ products?
Temperature, Catalyst, Concentration - Answers -What are the 3 factors that affect
reaction rates?
increases - Answers -What happens to the reaction rate if you increase the
temperature?
reaction - Answers -The presence of a catalyst in a chemical reaction increases the rate
at which ________ occurs?
Catalyst - Answers -What forms an intermediate product with 1+ of reactants which
lowers activation energy for other reactants; intermediate product breaks up and
releases uncombined ______ and combined products?
Original - Answers -Increasing concentration of reactant also results in greater chance
of other reactants colliding with ______ reactant
Concentration - Answers -rate of chemical reaction is directly proportional to _________
of its reactants
Acids - Answers -a compound that increases concentration of positively charged
hydrogen ions (H+) (and hydronium ions (H30+)) when dissolved in water
Bases - Answers -a compound that increases concentration of negatively charged
hydroxyl ions when dissolved in water (OH-)
less - Answers -Acids have a pH balance ______ than 7
