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Research Paper > Molecular Structure Lab Report: Determining Polarity

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Research Paper > Molecular Structure Lab Report: Determining Polarity Molecular Structure Lab Report: Determining Polarity Molecular Structure Lab Report: Determining Polarity Instructions: For t ... his investigative phenomenon, you will investigate why certain substances, such as oil and vinegar, don't mix. To do so, you will combine various compounds, compare their solubility, and determine their polarity. Fill in each section of this lab report and submit it to your instructor for grading. Title: Determining Polarity Objective(s): To investigate why certain substances such as, oil and vinegar, will not mix together. Hypothesis: If the polarity of 2 compounds are the same, then they will dissolve, because a polar molecule added to another polar molecule will remain with the same polarity. Procedures: This lab already includes materials and a summary of steps to follow. List and explain your controlled variables, independent variable, and the dependent variable for this lab. Materials • deionized (distilled) water • rubbing alcohol • vegetable oil • iodine • sodium chloride (salt) • acetic acid (vinegar) • test tubes or clear plastic cups • tablespoon and teaspoon • stirring sticks • permanent marker for labeling Safety · Always wear eye protection and use gloves when handling chemicals in a laboratory area. · Students should wash their hands thoroughly before leaving the laboratory area. · Dispose of any chemicals by washing used test tubes with soap and water or washing used cups then throwing them away in a trash bin. Variables: Remember, controlled variables are factors that remain the same throughout the experiment. An independent (test) variable changes so that the experimenter can see the effect on other variables. The dependent (outcome) variable will change in response to the test variable. Controlled variables: Solute substances such as vinegar, iodine, vegetable oil, water, rubbing alcohol, and salt Independent variable: Dissociation or dissolvement of molecules within the solute substance Dependent variable: Solvent or electronegativity of the solvent [Show More]

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