CHEM 103 MODULE 1 TO 6 EXAM ANSWERS PORTAGE
LEARNING| GRADED A+ LATEST 2025.
Law of conservation of matter - ANSWER-matter can neither be created nor destroyed but only
changed (rearranged)
chemical equation - ANSWER-A representation of a chemical reaction that uses symbols to show
the relationship between the reactants and the products
reactants - ANSWER-a substance that takes part in and undergoes change during a reaction.
products - ANSWER-The elements or compounds produced by a chemical reaction
balanced chemical equation - ANSWER-chemical equation with the same number of atoms of
each element on both sides of the equation
aqueous - ANSWER-dissolved in water; ions dissociate
solutions - ANSWER-homogeneous mixtures of 2 or more substances; a solvent is precent in
greater concentration; solvent is most commonly water ; the solute will never settle out of a
solution
ion-dipole attraction - ANSWER-electrostatic attraction between an ion and a polar molecule
when ionic compounds are dissolved in water... - ANSWER-the ions disperse evenly
, electrolytes - ANSWER-substances that produce ions in solution when they dissolve
soluble - ANSWER-able to be dissolved
insoluble - ANSWER-incapable of being dissolved
solubility simulation - ANSWER-when the amount of water remains consistent, the amount of a
salt that can dissolve stays the same so more added salts will create bound particles that do not
dissociate; shape of crystals formed in bound state varies by the salt
water's polarity - ANSWER-because water is polar, when a solution is dissolved in it, the H+ part
will attract to the anions and the O- part will attract to the cations
endothermic process - ANSWER-breaking bonds requires energy; compounds that dissolve
endothermically are not very soluble
nonelectrolyte - ANSWER-a compound that does not conduct an electric current in aqueous
solution or in the molten state; sucrose, water, etc.
strong electrolyte - ANSWER-all or nearly all of the solute exists as ions; salt dissociates fully;
NaCl, HCl, etc.
weak electrolyte - ANSWER-a solution that conducts electricity poorly because only a fraction of
the solute exists as ions; NH3, acetic acid, etc.
conductivity of a solution - ANSWER-the stronger the electrolyte, the more it will conduct; the
ions are able to move freely; it will light up a light bulb to complete the circuit;
LEARNING| GRADED A+ LATEST 2025.
Law of conservation of matter - ANSWER-matter can neither be created nor destroyed but only
changed (rearranged)
chemical equation - ANSWER-A representation of a chemical reaction that uses symbols to show
the relationship between the reactants and the products
reactants - ANSWER-a substance that takes part in and undergoes change during a reaction.
products - ANSWER-The elements or compounds produced by a chemical reaction
balanced chemical equation - ANSWER-chemical equation with the same number of atoms of
each element on both sides of the equation
aqueous - ANSWER-dissolved in water; ions dissociate
solutions - ANSWER-homogeneous mixtures of 2 or more substances; a solvent is precent in
greater concentration; solvent is most commonly water ; the solute will never settle out of a
solution
ion-dipole attraction - ANSWER-electrostatic attraction between an ion and a polar molecule
when ionic compounds are dissolved in water... - ANSWER-the ions disperse evenly
, electrolytes - ANSWER-substances that produce ions in solution when they dissolve
soluble - ANSWER-able to be dissolved
insoluble - ANSWER-incapable of being dissolved
solubility simulation - ANSWER-when the amount of water remains consistent, the amount of a
salt that can dissolve stays the same so more added salts will create bound particles that do not
dissociate; shape of crystals formed in bound state varies by the salt
water's polarity - ANSWER-because water is polar, when a solution is dissolved in it, the H+ part
will attract to the anions and the O- part will attract to the cations
endothermic process - ANSWER-breaking bonds requires energy; compounds that dissolve
endothermically are not very soluble
nonelectrolyte - ANSWER-a compound that does not conduct an electric current in aqueous
solution or in the molten state; sucrose, water, etc.
strong electrolyte - ANSWER-all or nearly all of the solute exists as ions; salt dissociates fully;
NaCl, HCl, etc.
weak electrolyte - ANSWER-a solution that conducts electricity poorly because only a fraction of
the solute exists as ions; NH3, acetic acid, etc.
conductivity of a solution - ANSWER-the stronger the electrolyte, the more it will conduct; the
ions are able to move freely; it will light up a light bulb to complete the circuit;
