Acids and Bases s1

Acids and Bases Name ______Date ______Period ______

Neutralization: Acids and Bases Together

True or False: For each false statement, change the underlined word(s) to the correct word(s).

1. ______If you dip some blue litmus paper into a neutral solution, the litmus paper turns pink. 2. ______If sodium hydroxide is mixed with hydrochloric acid, table salt is formed. 3. ______HOH is another way of writing a formula for a base. 4. ______Bases always contain a metal ion and a nonmetal ion. 5. ______To form a salt, an acid is mixed with a neutral solution. 6. ______If a base is added to an acid, one drop at a time, the phenolphthalein indicator in the solution will change from colorless to pink. 7. ______A neutral solution contains less hydrogen ions than an acidic solution.

8. ______A basic solution contains less hydroxide ions than a neutral solution. 9. ______NaF is an example of a base. 10. ______An acid is the chemical opposite of a salt.

Completion: Write in the word(s) which best complete(s) each statement.

1. A ______solution is neither acidic or basic. 2. If you mix an acid and a base, you produce a ______plus ______. 3. The above reaction is called ______. 4. When an acid and a base are mixed, the water is formed from the ______ion of the acid and the ______ion of the base. 5. Potassium nitrate is made by mixing ______acid and ______hydroxide. 6. Whenever an acid is mixed with a base, the compound which is always produced is ______. 7. Aluminum hydroxide is an example of a(n) ______. 8. Aluminum chloride is an example of a(n) ______. 9. HF is the formula for ______. 10. If you mix hydrochloric acid and calcium hydroxide, you produce water and a salt called ______. Acids and Bases Name ______Date ______Period ______pH: Acid or Base

True or False: For each false statement, change the underlined word(s) to the correct word(s).

1. ______A strong acid gives off many hydroxide ions in water. 2. ______The pH of a solution is found to be 5.5. This means the solution is basic. 3. ______A pH of 10 is more basic than a pH of 8. 4. ______Club soda is shown to have a pH of about 4, so club soda is an acidic solution. 5. ______The pH of a dilute solution of calcium hydroxide would be greater than 7. 6. ______The pH of a vinegar solution would be greater than 7. 7. ______A low pH tells you that few hydrogen ions are present. 8. ______As a solution becomes more basic, its pH decreases. 9. ______Air pollution from industry often causes rainwater to become acidic. 10. ______Unpolluted rainwater is slightly acidic.

Completion: Write in the word(s) which best complete(s) each statement.

1. You can think of pH as the ______of hydrogen ions. 2. A solution with a pH of 6 is a (slightly, strongly) ______acidic. 3. Methyl violet, which changes the color at different pH’s is known as a(n) ______. 4. The pH of pure water should be ______. 5. An electrical device which can measure the pH is called a ______. 6. A strong ______gives off many hydroxide ions in water. 7. If you mix equal amounts of equal molarities of sodium hydroxide with hydrochloric acid, the pH will be ______. 8. If vinegar is added to a potassium hydroxide solution, the pH ______. 9. The pH of your blood should be between 7.2 and 7.4, this means blood is slightly ______. 10. The pH of a sample of polluted rainwater is found to be 2. This means the rain is ______.

Thought Questions:

1. Tell the difference between a strong acid and a weak acid.

2. Tell the difference between a strong base and weak base.