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Investigation 6: Chemical Reactions

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Identify Evidence of Chemical Reactions

Performance Assessment

In this lab experience, students carry out an investigation to determine which solid fills a balloon with gas when reacted with 2 M acetic acid. They write the full, balanced chemical reaction, predict the products given the reactants and identify when no reaction has occurred. The four versions of this lab focus on evidence of a chemical reaction. Students dig deep into this concept and explore production of gas when they react acetic acid with a base. Students determine that in some trials when acetic acid is mixed with various white solids, there is no evidence of a chemical reaction. The five combinations serve as an excellent teaching point when looking for evidence that reactants have turned into products in the flask. Watch your students have fun and learn great skills with these labs!

Materials Included in Kit

Consumable:
Acetic acid, 2 M, 1 L
Calcium carbonate, 50 g
Sodium bicarbonate, 50 g
Sodium carbonate, 50 g
Sodium chloride, 40
Sucrose, 40 g
Balloons, 12", 60
Weigh dishes, 50
Non-Consumable:
Funnel, powder, small
Additional Materials Required
Cylinder, Borosilicate Glass, 25 mL, 10
Flask, Erlenmeyer, Borosilicate Glass, 125 mL, 10
Flinn Scientific Electronic Balance, 510 x 0.1-g, 10
Spatulas, Disposable, Box of 300, 1

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Evaluate Chemical Reactions

In this lab experience, students carry out investigations to properly balance a chemical reaction and identify reaction types. These four labs help students understand how scientists use scientific notation to represent chemical reactions. Students also gain a deeper understanding of the Law of Conservation of Mass when they see their bingo chips equal on both sides of the reaction. Witnessing chemical reactions with chemicals is eye opening to the students and aids them in getting a deeper understanding and appreciation for equation writing. Furthermore, modeling chemical reactions with bingo chips is a safe method to introduce a commonly tough topic in chemistry.

Materials Included in Kit

Consumable:
Aluminum foil, roll
Calcium carbonate, 25 g
Copper(II) chloride solution, 0.05 M, 1 L
Copper(II) chloride solution, 1.0 M, 1 L
Hydrochloric acid, 2 M, 500 mL
Magnesium carbonate, 100 g
Sodium phosphate solution, 0.05 M, 1 L
Balloons, 12 in., 40
Non-Consumable:
Bingo chips, blue, package of 120, 2
Bingo chips, green, package of 250
Bingo chips, red, package of 250
Bingo chips, yellow, package of 250
Additional Materials Required
Beakers, Borosilicate Glass, 100-mL, 10
Cylinder, Borosilicate Glass, 10 mL, 10
Cylinder, Borosilicate Glass, 50 mL, 10
Flask, Erlenmeyer, Borosilicate Glass, 125 mL, 20
Flinn Scientific Electronic Balance, 510 x 0.1-g, 10
Funnels, Utility, Polypropylene, 55 mm, 10
Stirring Rods, Glass, 10
Weighing Dishes, Disposable, 1-5/8" x 1-5/8" x 5/16", Pkg. of 500, 1

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Types of Chemical Reactions

In this lab experience, students carry out an investigation to perform five reactions that cover different reaction types, look for evidence of a chemical reaction in each case and write the chemical equations for each. These four labs help students understand the various reaction types and despite the fact that there are so many different chemical reactions that can occur, most can be classified into five basic types of chemical reactions: combination reactions, decomposition reactions, single replacement reactions, double replacement reactions and combustion reactions. With these labs, students will be able to get first hand experience with these reaction types!

Materials Included in Kit

Consumable:
Aluminum foil, 30.5 x 30.5 cm sheet
Calcium chloride solution, 0.5 M, 60 mL
Calcium turnings, 5 g
Copper(II) chloride solution, 0.05 M, 500 L
Copper(II) chloride solution, 1.0 M, 500 mL
Copper wire, 1.8 m
Ethyl alcohol, 95%, 50 mL
Magnesium metal ribbon, 91.5 cm
Silver nitrate solution, 0.5 M, 100 mL
Sodium bicarbonate, 20 g
Sodium carbonate solution, 0.5 M, 60 mL
Sodium metal, 2 g
Sodium phosphate solution,0.05 M, 500 mL
Sodium sulfate solution, 0.5 M, 500 mL
Cobalt chloride test papers and instruction card
Pencil leads, tube of 12
Petri dishes, disposable, 20
Pipets, 40
Wooden splints, package of 100
Non-Consumable:
Alligator clips, 10
Additional Materials Required
Bunsen Burner, Adjustable, Natural Gas, 10
Butane Safety Lighter, 10
Cylinder, Borosilicate Glass, 10 mL, 10
Flinn Scientific Electronic Balance, 510 x 0.1-g, 10
Spatulas, Disposable, Box of 300, 1
Test Tube Clamp with Finger Grips, 10
Test Tube Rack, Polypropylene, 10
Tongs or forceps, 10

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Predict Chemical Reactions

In this lab experience, students predict the outcome of chemical reactions and type then carry out the same chemical reactions and make necessary corrections to the predicted equations and types. The learning experience is dynamite in this lab! Expect the students to make corrections to their predicted equations after they perform the reactions in the lab and make observations. Mistakes in the written, predicted equation are welcome as it is the best learning experience for your students.

Materials Included in Kit

Consumable:
Aluminum foil, 16 in. x 18 in.
Ammonium oxalate solution, 0.25 M, 35 mL
Barium chloride solution, 0.1 M, 50 mL
Calcium chloride solution, 0.1 M, 50 mL
Calcium chloride solution, 0.5 M, 300 mL
Copper(II) chloride solution, 1 M, 85 mL
Copper(II) sulfate solution, 0.1 M, 85 mL
Copper wire, Cu, 18 gauge, 30 feet
Magnesium chloride solution, 0.1 M, 50 mL
Potassium iodate solution, 0.2 M, 35 mL
Potassium iodide solution, 0.1 M, 75 mL
Silver nitrate solution, 0.1 M, 75 mL
Silver nitrate solution, 0.5 M, 100 mL
Sodium bicarbonate, 100 g
Sodium carbonate solution, 1 M, 35 mL
Sodium carbonate solution, 0.5 M, 300 mL
Sodium chloride solution, 1 M, 100 mL
Sodium hydroxide solution, 1 M, 75 mL
Sodium sulfate solution, 1 M, 35 mL
Strontium chloride solution, 0.1 M, 50 mL
Zinc metal shot, 10 g
Pipets, 100
Additional Materials Required
Bunsen Burner, Adjustable, Natural Gas, 10
Flinn Scientific Electronic Balance, 210 x 0.01-g, 10
Reaction Plates, 24 Wells, 10
Spatulas, Disposable, Box of 300, 1
Test Tube Clamp with Finger Grips, 10
Test Tubes without Rims, Borosilicate Glass, 16 x 100 mm, 11.0 mL, 40
Test Tube Rack, Economy Choice, 10

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Water Purification

Engineering Design Challenge

In this lab experience, students are challenged to develop a process of water purification and assess benefits and costs and whether the process was fully successful. Students will purify water samples with a cost limit and provided purification materials. Students test their water samples with a 0.02% sodium rhodizonate solution.

Materials Included in Kit

Consumable:
Calcium chloride, anhydrous, 60 g
EDTA, 0.04 M, 600 mL
Fertilizer, 680 g
Barium nitrate, 0.1 M, 2 L
Sodium carbonate, anhydrous, 50 g
Sodium rhodizonate solution, 0.2 g
Zeolite (Ion exchange resin), 400 g
Pipets, 40
Additional Materials Required
Beakers, Borosilicate Glass, 100-mL, 10
Beakers, Borosilicate Glass, 150-mL, 10
Büchner Funnel, Polypropylene, 7.0 cm, 10
Cylinder, Borosilicate Glass, 50 mL, 10
Filter Paper, Quantitative, 7.0 cm, 10
Flinn Scientific Electronic Balance, 300 x 0.1-g, 10