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PS CH 23 & 24

DHS PS CH 23 & 24

QuestionAnswer
What is a substance that produces hydrogen ions in a solution? Acid
NaOH represents a ____ ? base
What about bases is true? Bases form when acids react with metals
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 an? Base
What is an organic compound that changes color in acid? Indicator
What base is found in antacids? Aluminum hydroxide
What statement about acids is not true? Acids form hydroxide ions in a solution.
In chemical equations describing dissociation, what do double arrows pointing in opposite directions indicate? The dissociation reaction is incomplete.
The strength of an acid or base depends on? How completely it ionizes 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 Magnesium
How many carbon atoms butane contains based on how it separated in a fractioning tower since it rises to the top? 1-4
What is NOT obtained from petroleum? Nucleic Acid
What are large molecules made up of smaller molecules linked together? Polymers
Why don't condensed liquids fall back through the holes in the plates? Pressure from rising vapors prevents it
Petroleum products are separated by what physical property? Boiling Point
What are small molecules that form the links of large moluecular chains? Monomers
What is NOT a fossil fuel? Hydrogen
What petroleum product has the highest boiling point? Asphalt
What is the process for the seperation of petroleum compounds? Fractional Distillation
What structure is found in all aromatic compounds? Benzene Ring
What is formed when -OH groups replace one or more hydrogen atoms in a hydrocarbon? Alcohol
What is the symbol for a carboxyl group? -COOH
What is one of the substances that contains carboxyl groups? Citric Acid
What forms when a carboxyl group, -COOH, is substituted for one of the hydrogen atoms attatched to a carbon atom? Organic Acid
What substituted hydrocarbon is added to natural gas to make people aware of leaks before they become dangerous? Mercaptan
What forms when sulfur replaces oxygen in the -OH group of an alcohol? Thiol
Most compounds containing the element carbon are called? Organic
How many electrons does carbon have in its outer energy level? 4
What enables carbon to form so many different compounds? Carbon atoms form 4 covalent bonds
What is a compound made up of only carbon and hydrogen aroms? Hydrocarbon
What type of chemical conds do saturated hydrocarbons contain? Only single bonds
What are compounds that have identical chemical formulas but different molecular structures and shapes? Isomers
Unsaturated hydrocarbons contain? At least one double or triple bond between carbon atoms
What suffix indicates a triple bond? -yne
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 the measure of how acidic or basic a substance is? pH
What is the change in color in the pressure of an acid or base? Indicators
What is a compound formed in solution from the negative ion of an acid and the positive ions of a base? Salt
What comes from an alcohol that is not a base but has a hydroxyl group? Ester
What has a bitter taste and a slippery feel that are clues that a solution is probably an? Base
How many ions does Ammonia produce in a solution? Only a few
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
Polyesters are fibers made of? Many esters
What is the main advantage of detergents over soaps? Detergents can be used in hard water
What measures the hydronium ions in a solution? Concentration
Coffee has a pH of about 5. Coffee is? Somewhat acidic
What contains compounds that allow small amounts of acids or bases to be absorbed without harmful effects? Buffers
Metal ions in water can react with soap to form? Soap Scum
To neutralize gastric juices in your stomach, antacids contain? Bases
What is NOT a property of an acid? Feeling slippery
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 hthat he should stop adding drops of the indicator when the solution? changes color
Adding this to a pond would be least likely to harm the fish and other organisms living there? buffer
What is the difference between a soap and a detergent? soaps contain salts and detergents contain sulfonic or phosphoric acid groups
That is an organic compound that changes color in acids? indictor
What are some characteristics of acids? taste sour, are corrosive, many foods contain acids, it has the chemical foruma HNO3, it forms hydronium ions in water
In chemical equations describing dissociation, what do double arrows pointing in opposite directions indicate? the dissociation reaction is complete
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, has a chemical forumla Ca(OH)2
How is the concentration of an acid or base different from the strength of an acid or 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
A hydrocarbon that has at least one double or triple bond is? unsaturated
A cydrocarbon containing only single-bonded carbon atoms is called a _____ hydrocarbon? saturated
Compounds that have identical chemical formulas but different molecular structures and shapes are called? isomers
A hydrocarbon in which one or more hydrogen atoms is replaced by an -OH groups is an? alcohol
A huge molecule made up of many smaller molecules is called? polymer
Rubbing alcohol is a? substituted hydrocarbon
Plastic is an? Polymer
The individual molecules that make up a polymer arfe called? Monomers
The structure of benezene can best be described as a? Ring
How many electrons does a carbon atom have in its outer energy level? Four
Chemists and engineers seperate petroleum into its individual compounds by? Boiling Point
Which of the following statements is true of all aromatic compounds? They contain a benezene ring structure.
Which of the following groups is characteristic of an alcohol? -OH
What doesn't come from petroleum? Sugar
What accounts for 15 percent of your total body weight? Proteins
The element carbon exists naturally EXCEPT? Metal
What isn't a characteristic of Protein? Inorganic compounds
Petroleum is a type of fossil fuel. According to this defination, where does petroleum come from? The remains of long-dead plants and animals
What is not an organic compound? Hydrogen
Information about alcohols and organic acids would most likely be found under which headingh in a table of contents? The Uses of Substituted Hydrocarbons
There are over four million organic compounds. The element carbon forms so many compounds because? Carbon atoms readily form four convalent bonds with other atoms
Butane and isobutane are isomers. Isomers are compounds with? Identical chemical formulas but different molecular structures
Organic materials contain carbon. There are many different kinds of organic materials. This is because carbon? forms many types of bonds
While discussing aromatic compounds, Akira's teacher passed around a vial full of sour-smelling liquid. Besides having an acrid smell, aromatic compounds aksi have which of the following characeristics? Ring structure
What best describes a hydrocarbon? A hydrocarbon is a molecule that contains carbon and hydrogen.
How many electrons does carbon have in its outer energy level? Four
What forms when sulfur replaces oxygen in the -OH group of an alcohol? Thiol
What is not a fossil fuel? Hydrogen
Created by: basmith