click below
click below
Normal Size Small Size show me how
Chapter 22
DHS PS Ch 22 - Acids, Bases, and Salts (2017/2018)
Question | Answer |
---|---|
What is a substance that produces hydrogen ions in a solution? | Acid |
NaOH | base |
What kind of acid is found in car batteries? | sulfuric |
What acid is Vitamin C? | Ascorbic Acid |
Any substance that forms hydroxide ions in a solution is a(n)? | Base |
What is an organic compound that changes color in acid? | Indicator |
What base is found in antacids? | Aluminum hydroxide |
Double arrows pointing in opposite directions indicate? | The dissociation reaction is incomplete or it involves a weak acid/base. |
The strength of an acid or base depends on? | How completely it ionizes/dissociates in water. |
What two terms refers to the amount of acid or base dissolved in an solution? | Dilute and concentrated |
What is a measure of the concentration of the hydonium ions in it? | pH |
Vinegar has a pH of about ____ . | 3 |
How many times more acidic is a substance with a pH of 2.5 compare to 4.5? | 100 |
What would the degree be in which a lightbulb would light up when the current is passed through a weak acid? | Dimmly |
What are the solutions containing ions that react with acids or bases to minimize their effects? | Buffers |
What substance would have the pH of about 10? | Milk of Magnesia |
What is the symbol for a carboxyl group? | -COOH |
What is a compound made up of only carbon and hydrogen aroms? | Hydrocarbon |
In a titration, what is the point at which the indicator changes color and stays that way? | Endpoint |
In a titration, what is the solution for which the concentration is known? | Standard solution |
What is a process that uses a solution of known concentration to find the concentration of another solution? | Titration |
What is a substance that produces H+ ions in a water solution? | Acid |
What is a substance that produces OH- ions in a solution? | Base |
What is a compound formed in solution from the negative ion of an acid and the positive ions of a base? | Salt |
What has a bitter taste and a slippery feel that are clues that a solution is probably an? | Base |
What is a solution that refers to the ease with which an acid or base forms ions in solution? | Strength |
What is thew type of base that only partly ionizes in a solution? | Weak Base |
If a single arrow that points at the ions that are formed, this shows it is a? | Strong Acid or Base |
In what type of reaction does an acid and a base produce salt and a water? | Neutralization |
What is the main advantage of detergents over soaps? | Detergents can be used in hard water and don't require warm water |
Coffee has a pH of about 5. Coffee is? | Somewhat acidic |
Metal ions in water can react with soap to form? | Soap Scum |
To neutralize HCl in your stomach, antacids contain? | Bases |
What pH measurement is basic? | Greater than 7 |
What instrument could tell you how acidic a sample of stream water is? | pH meter |
Fish tank water must be kept at a particular pH level so the fish stay healthy. What is the best way to protect the water from becoming too acidic or too basic? | Add a buffer to the water |
Mershum and his teacher are conducting a titration experiment. Mershum is adding an indicator into the solution drop by drop. He knows that he should stop adding drops of the indicator when the solution? | changes color |
What is the difference between a soap and a detergent? | soaps contain salts and detergents contain sulfonic or phosphoric acid groups |
What are some characteristics of acids? | taste sour, are corrosive, many foods contain acids, tend to beging with an "H", it forms hydronium ions in water |
In chemical equations describing dissociation, what do double arrows pointing in opposite directions indicate? | the dissociation reaction is incomplete or involves a weak acid/base. |
What are solutions containing ions htat react with acids or bases to minimize their effects? | buffers |
What are some characteristics of bases? | feels slippery, bitter taste, contain an -OH group. |
How is the concentration of an acid/base different from the strength of an acid/base? | Concentration refers to the amount of acid or base dissolved in solution. Strength refers to how completely the acid ionized in solution. |
Why do many states limit the amount of phosphates that can be used in detergents? | phosphates act as fertilizers, causing overgrowth of vegetation in streams |
A compound that is made up only of carbon and hydrogen is called a _________________? | hydrocarbon |
Water that contains dissolved metals such as calcium and magnesium. | hard water |