Chapter 4

Question 1

Stoichiometery

Answer 1

the study of weight relationships in balanced chemical reactions

Question 2

formula weight

Answer 2

the same thing as molar mass

Question 3

percent yield

Answer 3

actual yield
——————————– x 100%
theoretical yield

Question 4

molarity

Answer 4

moles of solute
——————————– = M
Liter of solution

Question 5

electrolytes

Answer 5

ions dissolved in water. can conduct electricity

Question 6

strong electrolytes

Answer 6

ions that completely dissociate in water

Question 7

weak electrolytes

Answer 7

ions that partially dissociate in water

Question 8

_____ dissolve in water without dissociating

Answer 8

molecules (such as sugar)

Question 9

covalent compounds dissolve in water if ___

Answer 9

they can form hydrogen bonds with water AND the molecules are small

Question 10

compounds that dissolve without dissociating are called

Answer 10

non-electrolytes

Question 11

precipitation reactions occur when

Answer 11

a solid (precipitate) forms when two solutions mix

Question 12

polyprotic acids contain

Answer 12

more than one ionizable proton

Question 13

when you mix an acid with a base _____

Answer 13

the H+ combines with the OH- to produce H2O.

an acid + a base always yields a salt + water

Question 14

titration

Answer 14

a technique for determining how much total acid or base is present in a solution

Question 15

oxidation

Answer 15

the process of losing electrons

Question 16

reduction

Answer 16

the process of gaining electrons

Question 17

OIL RIG

Answer 17

Oxidation Is Losing, Reduction Is Gaining