LAB MOD 3

Question 1

a process in which atleast one substance is produced as a result of chemical change

Answer 1

Chemical reaction

Question 2

product of ZnS

Answer 2

yellow smoke

Question 3

product of 2AlI3

Answer 3

violet smoke

Question 4

factors affecting the rate of solution formation

Answer 4

temperature- directly proportional- S to L

Agitation- directly proportional

Particle and surface area:
size- inversely
surface- directly

Question 5

vinegar and baking soda chem rxns

Answer 5

decomposition and double replacement

Question 6

sugar water and yeast rxns

Answer 6

fermentation

Question 7

HO4 and yeast rxns

Answer 7

decomposition reaction

Question 8

heating spoon rxns

Answer 8

incomplete combustion

Question 9

water and salt sol

Answer 9

soluble ; polar and polar ionic

Question 10

alcohol and salt sol

Answer 10

Insoluble; semi polar and polar ionic

Question 11

Acetone and salt sol

Answer 11

Insoluble; weak polar and polar ionic

Question 12

water and KAl

Answer 12

soluble polar and polar ionic

Question 13

Alcohol and KAl

Answer 13

Insol; semi polar and polar ionic

Question 14

Acetone and KAl sol

Answer 14

Insol; weak polar and polar ionic

Question 15

polar solvents characteristics

Answer 15

large dipole moment
dissolve polar compounds
partial + and - charge
molecules contain atoms with higher differences in electronegativity

Question 16

Non polar solvent characteristics

Answer 16

no dipole
dissolve non polar
no charge separation
atoms have nearly similar electronegaticity

Question 17

water + ethanol sol

Answer 17

miscible; polar polar

Question 18

water and acetone sol

Answer 18

Miscible; polar and polar

Question 19

water and oil sol

Answer 19

Immiscible; polar and non polar

Question 20

ethanol and acetone sol

Answer 20

Miscible; polar and polar

Question 21

ethanol and oil sol

Answer 21

immiscible; polar and non polar

Question 22

acetone and oil sol

Answer 22

Immiscible; polar and non polar