Study Guides - Cherokee County Schools

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Name Date Class 2 <strong>Study</strong> Guide 86 Strength of Acids and Bases Strength of Acids and Bases Chapter 23 Directions: The pH values of several common substances are listed below. Place each item from the list on the pH scale in its proper location. The first one has been done for you. pH 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 pure water 7.0 ocean water 8.5 tomatoes 4.0 lye 13.8 stomach acid 1.0 pure water lemons 2.5 shampoo 5.8 bananas 5.2 blood 7.2 milk of magnesia 10.5 ammonia 11.5 eggs 7.8 soap 10.0 vinegar 3.0 Directions: Complete the table below by writing the name of each of the substances above under the proper heading. Place substances with a pH lower than 3.0 in the strong acids column. Place substances with a pH higher than 10.0 in the strong bases column. 1. Strong acids 2. Weak acids 3. Weak bases 4. Strong bases Directions: Answer the following questions on the lines provided. 5. Is pure water an acidic, basic, or neutral substance? 6. Is the pH of a strong acid higher or lower than the pH of a weak acid of the same concentration? 7. Is the pH of a strong base higher or lower than the pH of a weak base of the same concentration? 8. On the pH scale, what are the values of acids and what are the values of bases? Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc.
Copyright © Glencoe/McGraw-Hill, a division of the McGraw-Hill Companies, Inc. Name Date Class 3 <strong>Study</strong> Guide Salts Chapter 23 Directions: Find the mistakes in the statements below. Rewrite each statement correctly on the lines provided. 1. An important difference between detergents and soaps is that soaps can be used in hard water. 2. Salts are made from bases, and esters come from alcohols that are also bases but have a hydroxyl group. 3. Polyesters are synthetic fibers that are made from an organic base that has two – COOH groups and an acid that has two – OH groups. 4. Titration is a process in which a solution of an unknown concentration is used to determine the concentration of another solution. 5. The endpoint of titration occurs when a drop of base turns the acid solution pink but the color changes back again. 6. Soap has a nonpolar end that mixes easily with oily dirt. 7. During a neutralization reaction, hydronium ions from a base combine with hydroxide ions from an acid to produce water and a salt. 8. A salt is a compound formed when the positive ions from an acid combine with the negative ions from a base. 9. In titration, the solution of known concentration is called the acid/base indicator. Salts 87
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Study Guides - Cherokee County Schools

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