Chemistry > Lab Report > Stony Brook University CHM 151-Ionic and Covalent Bonds Virtual Lab-Lab #9 Worksheet-AS-VERIFIED BY (All)

Stony Brook University CHM 151-Ionic and Covalent Bonds Virtual Lab-Lab #9 Worksheet-AS-VERIFIED BY EXPERTS

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Lab 9 Worksheet Name: _____Aaron Stretch_______ MEID: _______aar2148403__________ Part 1: Ionic and Covalent Bonds Virtual Lab Questions to answer during the lab: 1. During your visit to the alchemist’s house, what does he say his “medicine” is comprised of? The medicine is comprised of coconut materials and purified elephant tree pollen. 2. What substance are you using in your experiment as your control? Why is it important to have a control during an experiment? The substance that I’m using as my control is KCl, which I will use to test positive control on both solubility and conductivity. It is important to have a control during an experiment to be able to differentiate between what the control is doing and the reactants you added are doing. This gives me as the chemist an opportunity to be able to give results that are proven. 3. Once you stirred Substance 1, Substance 2, and the KCl control, what happened to the solutions? Substance 1- turned from a cloudy to clear solution. Substance 2- KCl- 4. Why are some substances not soluble in water, such as a metal? Metals are not soluble in water because they need conductivity too be able to break apart their bonds. They have different bonds called metallic bonds that do not have any properties that will allow it to be a solvent. 5. Record the number of red lights that appear for each of your substances (up to 6). KCl- 0 Substance 1- 0 Substance 2- 4 6. What is the difference between an ionic and covalent compound? An ionic compound when dissolved in water is conductive and a covalent compound when dissolved in water is not conductive due to the compounds not dissociating into ions. This is one of the major tells in an experiment when trying to determine whether it is ionic or covalent. 7. You drew the Lewis Structure of CH4. What is the name of CH4? Methane 8. Which substance melted first? Substance 1 melted first, then caffeine, and ended with Substance 2. 9. What were the two mystery substances? Substance 1- Glucose (C6H12O6) Substance 2- Sodium Chloride (NaCl) 10. Insert your screen shot here of your “Student Dashboard”, with your email address in the upper right corner clearly visible. Please check that the “Time taken, Score in %, and Completion %” values for the Ionic and Covalent lab are clearly visible and verify that the dashboard values match the information for the numerical score and

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