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Q5. How can we utilize properties like boiling point and melting point in testing the purity of a substance?

Q5. How can we utilize properties like boiling point and melting point in testing the purity of a substance?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Q5. How can we utilize properties like boiling point and melting point in testing the purity of a substance? 06. Enumerate and describe some other ways of determining pure or impure substance? Check your Understanding Directions: Analyze the following statements and determine whether the unknown sample is a substance or a mixture. Write S if the material is a substance and M if it is a mixture on your answer sheet. 1. An unknown metallic material is placed near magnet. What is the nature of this material if it is not attracted to a magnet? 2. An iron nail was dropped in a glass of water and exposed to air. It develops rust. How do you classify the original material? 3. A given sample of a solid material was heated. A gas evolved from the sample material and a crystalline solid residue was recovered. What is the nature of the original material? 4. Given an unknown liquid, you find a way to which you can identify if it's pure or not pure. You boil the liquid, and you observe that it boils quickly but the boiling point changes at some range. What is the nature of the material? 5. Suppose you are given a solid gel-like material. You prepared a set up to test its melting point. You heat the material through a water bath and it melts completely at a specific temperature. How do you classify such a sample?
Transcribed Image Text:Q5. How can we utilize properties like boiling point and melting point in testing the purity of a substance? 06. Enumerate and describe some other ways of determining pure or impure substance? Check your Understanding Directions: Analyze the following statements and determine whether the unknown sample is a substance or a mixture. Write S if the material is a substance and M if it is a mixture on your answer sheet. 1. An unknown metallic material is placed near magnet. What is the nature of this material if it is not attracted to a magnet? 2. An iron nail was dropped in a glass of water and exposed to air. It develops rust. How do you classify the original material? 3. A given sample of a solid material was heated. A gas evolved from the sample material and a crystalline solid residue was recovered. What is the nature of the original material? 4. Given an unknown liquid, you find a way to which you can identify if it's pure or not pure. You boil the liquid, and you observe that it boils quickly but the boiling point changes at some range. What is the nature of the material? 5. Suppose you are given a solid gel-like material. You prepared a set up to test its melting point. You heat the material through a water bath and it melts completely at a specific temperature. How do you classify such a sample?
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