Name Date Section REVIEW Check Your Recall , a neutral solution has a pH 1 Fill
ID: 3508508 • Letter: N
Question
Name Date Section REVIEW Check Your Recall , a neutral solution has a pH 1 Fill in the blanks: An acidic solution has a pH value of value of , and a basic (alkaline) solution has a pH value of , and its pH will 2 Adding hydrogen ions to a solution will make the solution more a. acidic; increase b. basic, increase c. acidic; decrease d. basic; decrease 3 What does a buffer do when hydrogen ions are added to a solution? The buffer keeps the pH of a solution neutral. b. The buffer releases base ions. c. The buffer releases additional hydrogen ions d. The buffer binds the hydrogen ions to remove them from the solution. 4 Which of the following statements about chemical reactions is false? a. The rate of a chemical reaction increases when temperature decreases. b. A chemical reaction occurs when chemical bonds are formed, broken, or rearranged. C. A chemical reaction occurs when electrons are transferred between molecules. d. All of the above are true. 5 How does an enzyme affect the rate of a chemical reaction? 6 An enzyme that has lost its shape a. is denatured and no longer functional. b. is denatured but still functional. c, is not different from a regular enzyme as shape is not important. d. can be restored by extreme temperatures or pH swings. 7 Fill in the blanks: Electrons are in an ionic bond, wh are in a polar covalent bond, and in a nonpolar covalent bond.Explanation / Answer
1. Acidic solution has pH value of less than 7.
Basic solution has pH value of greater than 7.
Neutral solution has pH value equal to 7.
2.A. Acidic, increase.
Increase in concentration of hydrogen ions increases acidity of medium.
3. B. Buffer releases base ions.
4. D. All of the above.
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