TOPS Tested Overhead Projection Series Compiled by HUBERT N. ALYEA Princeton University

CHEMICAL UNIT-1965 KIT A kit of 50 solids and 50 liquids or solutions suffices for 300 about 20 X 14 X 3 in. (1 ' /~ in. deep for each side); use directly

experiments, a full year of demonstrations in fow classes in on the lecture table. For student use, wnstrnct a rack, one for General Chemistry. Use square Z o e plastic (or glass) bottles, each ten students, from plywood with shelves in. wide, with with caps and droppers. Store them in a sturdy attach6 ease triangular ends.

LIQUIDS AND SOLUTIONS (No. 1-50)

Copy the labels and fasten to bottles with 1-in. wide cellophane RIDE, 8.5 g (2Hz0)." This means to dissolve 8.5 g of CuC4.- tape running wmpletely around the bottle. For solutions, the 2 8 0 in water to make 50 ml of 1 M CuC1,. Reagents No. 16, label indicates how much reagent to dissolve to make 50 ml of 21, 34, 48, and 91 are preferably stored in a separate place in 1 Msolution. Forexample,labelNo. 15reads "CUPRIC CHLO- glass-stoppered bottles. Bore a small hole in the cap of No. 23.

ACETIC ACID

B R O M ~ N E ~ ~ ('/LO full)

ETHYL ALCOHOL

95%

NICKEL CHLORIDE 11.9 g (6Hz0) 6 lMolar

18 ml glacial

10 CALCIUM ACETATE

LEAD ACETATE 19 g (3HzO)

18 GLUCOSE

16 g

34 NITRIC

ACID (conc.)

L

ACETONE saturated

ALUMINUM CHLORIDE

19 GLYCERINE MERCURIC PHENOLPH-

CHLORIDE THALEIN 2.7 g (0.2 M ) 0.2 g in EtOH

CALCIUM HYDROXIDE

limewater 2.8 e CaO

20 GOLD

CHLORIDE 0.1 g

AMMONIUM HYDROXIDE

28 36 MERCURY POTASSIUM

('/, full) BROMIDE 6.0 g

20 ml (conc.) 6 Molar

CARBON TETRA-

CHLORIDE 21 HYDRO-

CHLORIC ACID (conc.)

ANTIMONY TRI-

CHLORIDE

METHYL ALCOHOL

POTGSIUM DICHRO-

MATE 14.7 g 1'3 CHLORINE

aqueous

HYDRO- CHLORIC

ACID 6 Molar

38 POTASSIUM

FERRO- CYANIDE 21 g (3HO)

METEELENE BLUE (0.05 g)

ARSENIC TRI- 14

COLLODION 25 ml (conc.) CHLORIDE

9.0 g

15 CUPRIC

CHLORIDE 8.5 g (2H20)

23 HYDROGEN PEROXIDE

3%

METHYL VIOLET

39 POTASSIUM

IODIDE 8.3 g

7 BENZENE

8 BROM-

CRESOL GREEN (0.2 g)

24 ISOPROPYL ALCOHOL

32 MINERAL

OIL 40

RED DYE 16

ETHER

Volume 42, Number 8, August 1965 / A601

41 SILVER

43 SODIUM

45 SODIUM

SILICATE

47 STARCH

0.5 g

49 SULFURIC

ACID 6 Molar 17 ml (conc.)

NITRATE 8.5/g

CHLORIDE saturated

20 g

48 SULFURIC 50

TOLUENE 2.0 g saturated ACID (conc.)

SOLIDS (No. 51-100)

51 AGAR

62 CARBON cigarette

filter

82 POTASSIUM

THIO- CYANATE

92 SODIUM SULFITE

72 LEAD foil

73 LIMESTONE

63 COBALT

CHLORIDE

83 ROSIN

93 SODIUM

THIO- SULFATE

lumps

53 ALUMINUM

wire 74

MAGNESIUM 84 SILICA GEL ribbon 64

COPPER 94

STEEL WOOL

wire 85

SODIUM in oil

75 MANGANESE

DIOXIDE

DETERGENT Tide

95 SUGAR

55 AMMONIUM

DICHRO- MATE

76 MERCURIC

OXIDE ('/4 full)

96 SULFUR

flowers NAPH- THALENE

BARIUM CHLORIDE 97

ZINC dust 78

OXALIC ACID

HYDROXIDE pellets 68

GLASS WOOL

79 POTASSIUM

in oil

98 ZINC granular

69 IODINE 59

BORAX

99 ZINC

CHLORIDE 70

ION RESIN cation exchange

60 CALCIUM

OXIDE

100 UREA

61 71 CAMPHOR IRON strip

A602 / Journal of Chemicol Education