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Investigation 5: The Periodic Table

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Gravimetric Analysis of Periodic Trends

Performance Assessment

In this lab experience, students quantitatively determine the solubility of sodium halide salts in methanol. Then they use their results to make a prediction about the solubility of sodium fluoride. Students should come to understand that periodic trends can be used to make predictions about the behavior of a material. This empowers researchers to be more efficient when developing new compounds or procedures.

Materials Included in Kit

Consumable:
Methanol, CH3OH, 2 L
Sodium bromide, NaBr, 200 g
Sodium chloride, NaCl, 120 g
Sodium iodide, NaI, 200 g
Additional Materials Required
Flinn Scientific Electronic Balance, 410 x 0.01-g, 10
Beakers, Borosilicate Glass, 100-mL, 30
Büchner Funnel, Porcelain, Coors, 63 mm, 10
Cylinder, Borosilicate Glass, 50 mL, 10
Filter Paper, Quantitative, 5.5 cm, 1
FlatSpin™ Compact Magnetic Stirrer, 10
Magnetic Stirring Bar with Molded-on Pivot Ring, 1½" x ⅜", 10
Spatula/Spoon, Micro, 10
Stoppers, Rubber, Büchner Funnel, Size 6, 10
Watch Glass, 90 mm, Borosilicate Glass, 30

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Develop a Periodic Table

In this lab experience, students are challenged to design and develop their own periodic table. Students should come to understand that periodic trends can be used to make predictions about the behavior of a material. This empowers researchers to be more efficient when developing new compounds or procedures.

Materials Included in Kit

Non-Consumable:
Plastic farm animals, 144
Element card set, blue, 4
Element card set, yellow, 3
Element card set, green, 3

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Elemental Metals, Nonmetals, and Metalloids

In this lab experience, students characterize different elemental samples as either metal, nonmetal or metalloid using elemental positions on the periodic table to identify trends associated with metallic characteristics. Students will conclude that moving down a group on the periodic table correlates with an increase in metallic character, and that moving across a period correlates to a decrease in metallic character.

Materials Included in Kit

Consumable:
Carbon rods, Pkg/10
Non-Consumable:
Aluminium strips, Pkg/10
Iron nails, Pkg/10
Silicon, lumps, 20 g
Sulfur, Pkg/10
Tin, mossy, 25 g
Connector cord with alligator clips, 20
Lamp bulbs, Pkg/10
Light socket, Pkg/10
Additional Materials Required
Batteries, Transistor Battery (Alkaline), 9 V, 10
Flinn Conductivity Meter, 10
9 V Battery, 10

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Periodic Trends and Properties

In this lab experience, students qualitatively determine the activity and solubility of various group two metals and their salts. Students will identify that, for the metals and salts provided, moving down the group increases activity and decreases solubility. They will also identify that moving across a period decreases activity.

Materials Included in Kit

Consumable:
Aluminum foil, heavy duty, roll
Barium chloride, 0.1 M, 75 mL
Calcium chloride, 0.1 M, 75 mL
Calcium turnings, 8 g
Hydrochloric acid, 0.5 M, 75 mL
Magnesium ribbon, 18 in.
Magnesium chloride, 0.1 M, 75 mL
Potassium iodate, 0.2 M, 75 mL
Sodium carbonate, 1 M, 75 mL
Sodium sulfate, 1 M, 75 mL
Strontium chloride, 0.1 M, 75 mL
Red litmus paper, vial
Pipets, 160
Additional Materials Required
Flinn Digital Thermometer, 10
Forceps, 10
Reaction Plates, 24 Wells, 10
Weighing Dishes, Disposable, 1-5/8" x 1-5/8" x 5/16", Pkg. of 500, 1

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Growing Crystals in Gel

Engineering Design Challenge

In this lab experience, students identify a mixture of metal cations and nonmetal ions that are able to produce a crystal then construct a gel-based crystallization aparatus to slowly grow a high-quality crystal. Students will identify that their ability to successfully grow crystals is linked to the element’s position on the periodic table.

Materials Included in Kit

Consumable:
Copper(II) chloride solution, 1 M, 100 mL
Cobalt(II) chloride, 25 g
Zinc nitrate solution, 1 M, 100 mL
Iron(III) nitrate solution, 1 M, 100 mL
Sodium phosphate monobasic solution, 1M, 600 mL
Sodium silicate solution, 15%, 750 mL
Non-Consumable:
Stoppers, solid, #2, 20
Test
tubes, 20 x 150 mm, 20
Additional Materials Required
Cylinder, Borosilicate Glass, 25 mL, 10
Test Tube Rack, Economy Choice, 10