Ch22 Chemical Analysis

Question 1

Define qualitative (analysis):

Answer 1

The process used to determine the presence/absence of a substance in a given sample

Question 2

Define cation:

Answer 2

A positive ion that would be attracted to the cathode in electrolysis

Question 3

Define states symbols:

Answer 3

Symbols used to show the physical state of the reactants and products in a chemical reaction
s - solid
l - liquid
g - gas
aq - in solution in water

Question 4

Define precipitate:

Answer 4

An insoluble salt formed during a precipitation reaction

Question 5

Define precipitation reaction:

Answer 5

A reaction in which an insoluble salt is prepared from solutions of two suitable soluble salts

Question 6

Define quantitative (analysis):

Answer 6

The process used to determine the amount/percentage of a substance in a given sample

Question 7

Define acid-base titration:

Answer 7

A method of quantitative, chemical analysis when an acid is added slowly to a base until it has been neutralized

Question 8

Define titre:

Answer 8

The volume of solution added from the burette during a titration

Question 9

Define indicator:

Answer 9

A substance that changes color when added to acidic/alkaline solutions
Ex litmus/ thymolphthalein

Question 10

Define indicator:

Answer 10

A substance that changes color when added to acidic/alkaline solutions
Ex litmus/ thymolphthalein