CHEM 108 FINAL |COMPLETE STUDY GUIDE WITH 100%
ACCURATE QUESTIONS & ANSWERS | ACE EVERY TEST |
GUARANTEED EXCELLENCE.
molar mass Answer: quantity in grams that equals the atomic mass of that element
limiting reactant Answer: the reactant that is completely used up
law of conservation of mass Answer: there is no change in total mass of the substances
reacting in a chemical reaction
heat of reaction Answer: amount of heat absorbed or released during a reaction that takes
place at a constant pressure
exothermic reaction Answer: energy of products is lower than reactants, heat is released
as products form
endothermic reaction Answer: energy of products is higher than reactants, heat is required
to convert the reactants to products
activation energy Answer: energy required for a reaction to progress - particles need to
collide with a certain amount of energy in order to react
Heat of reaction calculation Answer: change in heat = Hproducts + Hreactants
solute Answer: substance that is uniformly dispersed throughout another (lesser amount)
solvent Answer: substance that solute dissolves in (larger amount)
solution Answer: homogeneous mixture in which one substance is uniformly dispersed
throughout another
Like dissolves like Answer: What is the rule for dissolving?
strong electrolyte Answer: 100% dissociation of solute into ions, conducts electricity very
well
, weak electrolyte Answer: compound that dissolves in H2O mostly as molecules, only a
few dissolved solute molecules undergo dissociation, producing small number of ions;
does not conduct electrical currents as strong
electrolyte Answer: when they dissolve in water, the process of dissociation separates
them into ions forming solutions that conduct electricity
nonelectrolyte Answer: when they dissolve in eater, they do not separate into ions,
solutions do not conduct electricity
No Answer: Does a solution that does not contain ions conduct electricity?
equivalents Answer: the amount of an ion equal to 1 mole of positive or negative electrical
charge
1 Eq Answer: How many equivalents are in 1 mole of Na+ ions?
precipitate Answer: formation of a solid from a solution
solubility Answer: maximum amount of solute that can be dissolved at a certain
temperature
saturated Answer: solution that contains all the solute that can dissolve
unsaturated Answer: if a solute readily dissolves when added to a solvent, solution does
not contain maximum amount of solute
supersaturated Answer: holding more solute than would normally be possible
Increases Answer: Increasing temperature of a solid in liquid does what to solubility?
Increases Answer: Decreasing temperature of a gas in a liquid does what to solubility?
Increase Answer: Increasing pressure of a gas in a liquid does what to solubility?
mass of solute Answer: part - percent concentration by mass
mass of solution Answer: whole - percent concentration by mass
ACCURATE QUESTIONS & ANSWERS | ACE EVERY TEST |
GUARANTEED EXCELLENCE.
molar mass Answer: quantity in grams that equals the atomic mass of that element
limiting reactant Answer: the reactant that is completely used up
law of conservation of mass Answer: there is no change in total mass of the substances
reacting in a chemical reaction
heat of reaction Answer: amount of heat absorbed or released during a reaction that takes
place at a constant pressure
exothermic reaction Answer: energy of products is lower than reactants, heat is released
as products form
endothermic reaction Answer: energy of products is higher than reactants, heat is required
to convert the reactants to products
activation energy Answer: energy required for a reaction to progress - particles need to
collide with a certain amount of energy in order to react
Heat of reaction calculation Answer: change in heat = Hproducts + Hreactants
solute Answer: substance that is uniformly dispersed throughout another (lesser amount)
solvent Answer: substance that solute dissolves in (larger amount)
solution Answer: homogeneous mixture in which one substance is uniformly dispersed
throughout another
Like dissolves like Answer: What is the rule for dissolving?
strong electrolyte Answer: 100% dissociation of solute into ions, conducts electricity very
well
, weak electrolyte Answer: compound that dissolves in H2O mostly as molecules, only a
few dissolved solute molecules undergo dissociation, producing small number of ions;
does not conduct electrical currents as strong
electrolyte Answer: when they dissolve in water, the process of dissociation separates
them into ions forming solutions that conduct electricity
nonelectrolyte Answer: when they dissolve in eater, they do not separate into ions,
solutions do not conduct electricity
No Answer: Does a solution that does not contain ions conduct electricity?
equivalents Answer: the amount of an ion equal to 1 mole of positive or negative electrical
charge
1 Eq Answer: How many equivalents are in 1 mole of Na+ ions?
precipitate Answer: formation of a solid from a solution
solubility Answer: maximum amount of solute that can be dissolved at a certain
temperature
saturated Answer: solution that contains all the solute that can dissolve
unsaturated Answer: if a solute readily dissolves when added to a solvent, solution does
not contain maximum amount of solute
supersaturated Answer: holding more solute than would normally be possible
Increases Answer: Increasing temperature of a solid in liquid does what to solubility?
Increases Answer: Decreasing temperature of a gas in a liquid does what to solubility?
Increase Answer: Increasing pressure of a gas in a liquid does what to solubility?
mass of solute Answer: part - percent concentration by mass
mass of solution Answer: whole - percent concentration by mass
