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Uses of Substances based on their Chemical Bonds Objective: To discover the uses of some substances based on their chemical bonds. I. I. Materials: Flashlight bulb 3V -battery Connecting wires (exposed ends) Metal strips of aluminum, copper, iron Distilled water NaCI Small Beaker II. Procedure: 1. To show the conductivity of table salt, NaCl, prepare a simple circuit consisting of a flashlight bulb, 3V- battery, and connecting wires with insulator ends removed. Prepare 200 cc of distilled water in a small beaker and immersed the ends of the connecting wire in the water as shown below. Observe the bulb if it would light. Mix 5 g of NaCl in the distilled water and observe the bulb. Did it light? electrodes wire saltwater battery light bulb 2. Add 5 g more, mix and observe the bulb again. 3. Repeat procedure 2. 4. To illustrate the electrical conductivity of different metals, prepare strips of aluminum, copper and iron. Use the circuit in procedure 1. Connect the bare ends of the wire to each of the metal strips and observe if the bulb will light. IV. Results: Check the appropriate observation. Conductivity of NaCl solution Bulb lights Bulb did not light Distilled water without NaCl Distilled water and 5g NaCl Distilled water and 10g NaCl Learning Module in Inorganic Chemistry Chapter 1: Laboratory Activities Distilled water and 15g NaCl Conductivity of Metal Strips Aluminum Copper Iron Guide questions: 1. Why did the bulb light when NaCl is mixed with distilled water? Explain in terms of chemical bonding. V. 2. Is there a difference in the bulb brightness for each of metal strip? Why? VI. Conclusion:

Uses of Substances based on their Chemical Bonds Objective: To discover the uses of some substances based on their chemical bonds. I. I. Materials: Flashlight bulb 3V -battery Connecting wires (exposed ends) Metal strips of aluminum, copper, iron Distilled water NaCI Small Beaker II. Procedure: 1. To show the conductivity of table salt, NaCl, prepare a simple circuit consisting of a flashlight bulb, 3V- battery, and connecting wires with insulator ends removed. Prepare 200 cc of distilled water in a small beaker and immersed the ends of the connecting wire in the water as shown below. Observe the bulb if it would light. Mix 5 g of NaCl in the distilled water and observe the bulb. Did it light? electrodes wire saltwater battery light bulb 2. Add 5 g more, mix and observe the bulb again. 3. Repeat procedure 2. 4. To illustrate the electrical conductivity of different metals, prepare strips of aluminum, copper and iron. Use the circuit in procedure 1. Connect the bare ends of the wire to each of the metal strips and observe if the bulb will light. IV. Results: Check the appropriate observation. Conductivity of NaCl solution Bulb lights Bulb did not light Distilled water without NaCl Distilled water and 5g NaCl Distilled water and 10g NaCl Learning Module in Inorganic Chemistry Chapter 1: Laboratory Activities Distilled water and 15g NaCl Conductivity of Metal Strips Aluminum Copper Iron Guide questions: 1. Why did the bulb light when NaCl is mixed with distilled water? Explain in terms of chemical bonding. V. 2. Is there a difference in the bulb brightness for each of metal strip? Why? VI. Conclusion:

Chemistry: The Molecular Science
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter17: Electrochemistry And Its Applications
Section: Chapter Questions
Problem 83QRT
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Uses of Substances based on their Chemical Bonds Objective: To discover the uses of some substances based on their chemical bonds. I. I. Materials: Flashlight bulb 3V -battery Connecting wires (exposed ends) Metal strips of aluminum, copper, iron Distilled water NaCI Small Beaker II. Procedure: 1. To show the conductivity of table salt, NaCl, prepare a simple circuit consisting of a flashlight bulb, 3V- battery, and connecting wires with insulator ends removed. Prepare 200 cc of distilled water in a small beaker and immersed the ends of the connecting wire in the water as shown below. Observe the bulb if it would light. Mix 5 g of NaCl in the distilled water and observe the bulb. Did it light? electrodes wire saltwater battery light bulb 2. Add 5 g more, mix and observe the bulb again. 3. Repeat procedure 2. 4. To illustrate the electrical conductivity of different metals, prepare strips of aluminum, copper and iron. Use the circuit in procedure 1. Connect the bare ends of the wire to each of the metal strips and observe if the bulb will light. IV. Results: Check the appropriate observation. Conductivity of NaCl solution Bulb lights Bulb did not light Distilled water without NaCl Distilled water and 5g NaCl Distilled water and 10g NaCl Learning Module in Inorganic Chemistry Chapter 1: Laboratory Activities Distilled water and 15g NaCl Conductivity of Metal Strips Aluminum Сopper Iron Guide questions: 1. Why did the bulb light when NaCl is mixed with distilled water? Explain in terms of chemical bonding. V. 2. Is there a difference in the bulb brightness for each of metal strip? Why? VI. Conclusion:
Transcribed Image Text:Uses of Substances based on their Chemical Bonds Objective: To discover the uses of some substances based on their chemical bonds. I. I. Materials: Flashlight bulb 3V -battery Connecting wires (exposed ends) Metal strips of aluminum, copper, iron Distilled water NaCI Small Beaker II. Procedure: 1. To show the conductivity of table salt, NaCl, prepare a simple circuit consisting of a flashlight bulb, 3V- battery, and connecting wires with insulator ends removed. Prepare 200 cc of distilled water in a small beaker and immersed the ends of the connecting wire in the water as shown below. Observe the bulb if it would light. Mix 5 g of NaCl in the distilled water and observe the bulb. Did it light? electrodes wire saltwater battery light bulb 2. Add 5 g more, mix and observe the bulb again. 3. Repeat procedure 2. 4. To illustrate the electrical conductivity of different metals, prepare strips of aluminum, copper and iron. Use the circuit in procedure 1. Connect the bare ends of the wire to each of the metal strips and observe if the bulb will light. IV. Results: Check the appropriate observation. Conductivity of NaCl solution Bulb lights Bulb did not light Distilled water without NaCl Distilled water and 5g NaCl Distilled water and 10g NaCl Learning Module in Inorganic Chemistry Chapter 1: Laboratory Activities Distilled water and 15g NaCl Conductivity of Metal Strips Aluminum Сopper Iron Guide questions: 1. Why did the bulb light when NaCl is mixed with distilled water? Explain in terms of chemical bonding. V. 2. Is there a difference in the bulb brightness for each of metal strip? Why? VI. Conclusion:
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