Experiment 4 Physical Chemical Properties

Topics: Sodium, Chemistry, Sodium chloride Pages: 4 (1114 words) Published: June 29, 2015
Purpose:
To investigate the chemical properties of pure chemical substances. To investigate the physical properties of pure chemical substances.

Procedure:
In this experiment, I will examine several physical and chemical properties of a number of elements and compounds.

Student Material:
1 Matches

LabPaq Materials:
1 Beaker, 100 mL, glass, 1 Burner-fuel, 1 Goggles-Safety, 1 Rod, Stirring rod – Glass, 1Test Tube(5), 13 x 100 mm in Bubble Bag, 1 Test-tube-clamp-holder, 1 Test-tube-cleaning-brush, 1 Well-Plate-24, 1 Well-Plate-96, 1 Litmus Paper, Blue - in Bag 2"x 3", 1 Litmus paper, Red - in Bag 2"x 3", 1 Copper (II) Carbonate in Vial, 1/2 Full, 1 Copper (II) Nitrate Crystals in Vial, 1 Copper Metal - 6-8 pc. in Bag 2"x 3", 1 Hydrochloric Acid, 6 M - 4 mL in Dropper Bottle, 1 Magnesium Metal Pieces - 6-8 in Bag 2"x 3", 1 Magnesium Oxide Powder - 0.5 g, 2 Pipet, Empty Short Stem - Labeled "HCl," & "NaOH", 1 Sodium Chloride in Vial – Full, 1 Sodium Hydroxide, 6 M - 4 mL in Dropper Bottle, 1 Zinc, Mossy - 6-8 Pieces, Bag 2"x 3"

1. Half-fill one well of a 24-well plate with 6 M HCl and half-fill a second well of the 24-well plate with 6 M NaOH. Suck up these chemicals into their labeled pipets for later use.

2. Perform the following steps on each of the substances to be tested. Complete all tests of one substance and record your observations before proceeding to the next. a. Place 4 small test tubes into wells of the 24-well plate. b. Place small amounts of the substance to be tested in each of the four micro test tubes.

3. First test tube:
a. Examine and record color and odor.
b. Light the burner fuel wick. Grasp the test tube with the holder and heat the sample by slowly moving it just above the flame, as displayed in Figure 1. Observe the effect of heat on the substance. Note the evolution of any gases.

c. Allow the test tube to cool before storing or the well plate plastic may melt.

4. Second test tube:
a. Add enough...
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