| Assessment Questions: 75 results |
Nomenclature (10 Variations)
A collection of 10 assessment questions about Nomenclature
Physical Properties |
Carboxylic Acids |
Esters |
Molecular Properties / Structure |
Aromatic Compounds |
Amines / Ammonium Compounds |
Phenols |
Nomenclature / Units / Symbols |
Alkanes / Cycloalkanes |
Stereochemistry
|
Amino Acids (10 Variations)
A collection of 10 assessment questions about Amino Acids
Amino Acids |
Stereochemistry |
Acids / Bases |
Amines / Ammonium Compounds |
Carboxylic Acids |
Nucleic Acids / DNA / RNA |
Proteins / Peptides |
Synthesis |
Aldehydes / Ketones
|
Carboxylic Acids (14 Variations)
A collection of 14 assessment questions about Carboxylic Acids
Carboxylic Acids |
Acids / Bases |
Esters |
Amides |
Reactions |
Synthesis |
Grignard Reagents |
Ethers |
Oxidation / Reduction |
Alkenes |
Heterocycles |
Amines / Ammonium Compounds |
Aldehydes / Ketones
|
Covalent Bonding (11 Variations)
A collection of 11 assessment questions about Covalent Bonding
Carboxylic Acids |
Acids / Bases |
Resonance Theory |
Covalent Bonding |
Phenols |
Amines / Ammonium Compounds |
Free Radicals |
Alkenes |
Amides |
Ethers
|
Phenols and Aryl Halides (9 Variations)
A collection of 9 assessment questions about Phenols and Aryl Halides
Phenols |
Acids / Bases |
Reactions |
Alcohols |
Amines / Ammonium Compounds |
Carboxylic Acids |
Aromatic Compounds |
Ethers |
Alkylation |
Synthesis |
Esters |
Electrophilic Substitution
|
Acid Base (44 Variations)
A collection of 44 assessment questions about Acid Base
Acids / Bases |
Carboxylic Acids |
Alcohols |
Phenols |
Reactions |
Alkanes / Cycloalkanes |
Aldehydes / Ketones |
Esters |
Alkenes |
Alkynes |
Amines / Ammonium Compounds |
Ethers |
Lewis Acids / Bases |
Amides |
Amino Acids
|
Amines (30 Variations)
A collection of 30 assessment questions about Amines
Amines / Ammonium Compounds |
Synthesis |
Acids / Bases |
Reactions |
Amides |
Electrophilic Substitution |
Stereochemistry |
Carboxylic Acids |
Oxidation / Reduction |
Aldehydes / Ketones |
Alkanes / Cycloalkanes |
Dyes / Pigments |
Grignard Reagents
|
Organometallic (13 Variations)
A collection of 13 assessment questions about Organometallic
Organometallics |
Grignard Reagents |
Epoxides |
Alcohols |
Esters |
Alkanes / Cycloalkanes |
Aldehydes / Ketones |
Synthesis |
Ethers |
Aromatic Compounds |
Reactions |
Carboxylic Acids |
Alkenes |
Amines / Ammonium Compounds |
Acids / Bases |
Alkynes
|
Enamines (6 Variations)
A collection of 6 assessment questions about Enamines
Aldehydes / Ketones |
Amines / Ammonium Compounds |
Synthesis
|
Organic : FunctionalGroups (18 Variations)
The structure for niacin (one of the B-vitamins) is shown below. Which of the following functional groups is present in niacin?
Alcohols |
Aldehydes / Ketones |
Carboxylic Acids |
Esters |
Amines / Ammonium Compounds
|
Nomenclature (1 Variations)
A collection of 1 assessment questions about Nomenclature
Aldehydes / Ketones |
Nomenclature / Units / Symbols |
Amines / Ammonium Compounds |
Carboxylic Acids
|
Bonding (34 Variations)
A collection of 34 assessment questions about Bonding
Molecular Properties / Structure |
Covalent Bonding |
IR Spectroscopy |
VSEPR Theory |
Aromatic Compounds |
Lewis Structures |
Resonance Theory |
Aldehydes / Ketones |
Carboxylic Acids |
Acids / Bases
|
Gases : IDGasFromVelocity (8 Variations)
The following are graphs of molecular velocities versus the relative number of molecules for argon, chlorine, methane and xenon at 300K. Which graph is for argon?
Gases |
Molecular Properties / Structure
|
Gases : RealGases (6 Variations)
Which gas in the following list will have the greatest deviation from ideal behavior at STP?
Gases |
Molecular Properties / Structure
|
Matter_and_Measurement : ElemCompdMix (10 Variations)
Classify each of the following as an element, compound, or mixture.
Molecular Properties / Structure
|
Matter_and_Measurement : HomoOrHeteroMix (10 Variations)
Identify the following as homogeneous or heterogeneous mixtures.
Molecular Properties / Structure
|
Matter_and_Measurement : ThryOrHypothesis (6 Variations)
Identify each of the following statements as a theory or a hypothesis.
Molecular Properties / Structure
|
Matter_and_Measurement : ClassifyMatter (8 Variations)
Which of the following descriptions best classifies aluminum foil?
Molecular Properties / Structure
|
Stoichiometry : CombustionAnalysis (10 Variations)
While working in the lab, you find a bottle of white powder labeled
"analgesic compound #5". Since the original investigator neglected
to record the identity of the substance, you decide to perform a
combustion analysis to identify the compound. You have a 65.7 g
sample that when burned produces 182 g CO2 and 51.7 g
H2O. What is the formula of this compound? (The compound
only consists of C,H, and O.)
Stoichiometry |
Molecular Properties / Structure
|
Stoichiometry : FormulaFromComp (8 Variations)
Lactic acid is the substance that makes your muscles burn when you've been exercising hard. Lactic acid is composed of 40.0% carbon, 6.7% hydrogen, and 53.3% oxygen by weight. If it has a molar mass of 90 g/mol, what is its molecular formula?
Stoichiometry |
Molecular Properties / Structure
|
Bonding : ValenceElectrons (10 Variations)
Determine the number of valence electrons for each molecule or ion and match it with the number in the pull-down list to the right of the formula.
Molecular Properties / Structure
|
Bonding : DetermineStructure (8 Variations)
H
A substance is analyzed and found to contain 57.10% carbon, 4.80% hydrogen and 38.06% oxygen by weight. Its molecular weight is determined to be 126.11 g/mol. Which of the structures shown are possible structures for the substance?
Molecular Properties / Structure |
Stoichiometry
|
Atoms,_Molecules_and_Ions : IonicOrMolecular (10 Variations)
Identify each of the following compounds as ionic or molecular.
Molecular Properties / Structure
|
Atoms,_Molecules_and_Ions : AllotropesOfElement (4 Variations)
Which of the following is an allotrope of oxygen? (You may select more than one.)
Molecular Properties / Structure
|
Atoms,_Molecules_and_Ions : AtomicRatio (10 Variations)
Which compound(s) contain the most nitrogen atoms per molecule or formula unit?
Molecular Properties / Structure |
Stoichiometry
|
Atoms,_Molecules_and_Ions : BinaryMolcFromImage (8 Variations)
Which of the following binary compounds could the figure below best represent? 
Molecular Properties / Structure |
Stoichiometry
|
Atoms,_Molecules_and_Ions : IonicFormula (10 Variations)
Which pair of ions will form a compound of formula M2X?
Molecular Properties / Structure |
Stoichiometry
|
Atoms,_Molecules_and_Ions : IonicProperties (8 Variations)
Which of the following statements concerning the properties of ionic compounds is NOT correct?
Molecular Properties / Structure
|
Atoms,_Molecules_and_Ions : IonType (8 Variations)
Identify the following ion as monatomic or polyatomic and as an anion or a cation: Cr2O7-2
Molecular Properties / Structure
|
Atoms,_Molecules_and_Ions : CalcMolarMass (8 Variations)
What is the molar mass of potassium phosphate,
K3PO4?
Enter the numeric value very carefully below, rounding to one decimal place only. Do not put the units in, but think about what the
units are!
Molecular Properties / Structure |
Stoichiometry
|
Atoms,_Molecules_and_Ions : CompFromNanoPic (9 Variations)
__________ can be represented by the nanoscale diagram below. 
Which of the following is the best choice to fill in the blank?
Molecular Properties / Structure
|
Organic : HsOnAlkaneBackbone (10 Variations)
The carbon skeleton for 2-methylbutane is shown below. How many hydrogens are present?
Alkanes / Cycloalkanes |
Molecular Properties / Structure
|
Biochemistry : Amphiphile (20 Variations)
Which of the following molecules is an amphiphile?
Molecular Properties / Structure |
Noncovalent Interactions
|
Biochemistry : StructureDef (4 Variations)
What kind of structure is defined by the linear sequence of amino acids in the protein chain?
Proteins / Peptides |
Molecular Properties / Structure
|
Biochemistry : Secondary (15 Variations)
What secondary structure element is represented by the green sequence in the following structure of the protein calmodulin?
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Proteins / Peptides |
Molecular Properties / Structure
|
Bonding : CompareBondLength (5 Variations)
Which of the following compounds has the shortest bond between nitrogen and oxygen?
Covalent Bonding |
Molecular Properties / Structure
|
Biochemistry : Tertiary (16 Variations)
Which of the following is NOT true about the tertiary structure of water-soluble proteins?
Proteins / Peptides |
Molecular Properties / Structure
|
Functional Groups (9 Variations)
A collection of 9 assessment questions about Functional Groups
Reactions |
Amines / Ammonium Compounds |
Alkanes / Cycloalkanes |
Conformational Analysis |
Nomenclature / Units / Symbols |
Aldehydes / Ketones |
Carboxylic Acids |
Amides |
Ethers
|
Stoichiometry : CompareParticles (20 Variations)
Which has the greater number of particles, 1 mol O2 or 1 mol O?
Molecular Properties / Structure |
Atomic Properties / Structure
|
Bonding : IonicOrCovalent (10 Variations)
Match the following formulas to the correct type of bonding: ionic or covalent.
Molecular Properties / Structure |
Covalent Bonding |
Ionic Bonding
|
Intermolecular_Forces__Liquids_and_Solids : BoilingPoint (10 Variations)
Which of the following substances has the highest boiling point?
Liquids |
Noncovalent Interactions |
Molecular Properties / Structure
|
Intermolecular_Forces__Liquids_and_Solids : IntermolecularForces (10 Variations)
For which of the following compounds is hydrogen bonding the strongest?
Noncovalent Interactions |
Molecular Properties / Structure |
Hydrogen Bonding
|
Intermolecular_Forces__Liquids_and_Solids : OrganicBoilingPoint (11 Variations)
Which of the following organic compounds has the highest boiling point?
Noncovalent Interactions |
Molecular Properties / Structure |
Hydrogen Bonding
|
Oxidation Reduction (21 Variations)
A collection of 21 assessment questions about Oxidation Reduction
Oxidation / Reduction |
Esters |
Oxidation State |
Reactions |
Aldehydes / Ketones |
Alcohols |
Carboxylic Acids |
Alkynes |
Alkenes |
Alkanes / Cycloalkanes |
Aromatic Compounds |
Phenols |
Amides |
Amines / Ammonium Compounds
|
Reactions : HighOxNumber (10 Variations)
In which of the following does sulfur have the highest oxidation number?
Atomic Properties / Structure |
Periodicity / Periodic Table |
Molecular Properties / Structure
|
Reactions : IDOxidationNumber (10 Variations)
What is the oxidation number of sulfur in barium sulfate (BaSO4)?
Atomic Properties / Structure |
Periodicity / Periodic Table |
Molecular Properties / Structure
|
Reactions : StrongWeakAcidBase (10 Variations)
Which of the following are strong acids?
Acids / Bases
|
Reactions : AcidBaseRxns (20 Variations)
In order to answer the following questions, write the net ionic equation for the reaction between equal volumes of 0.10 M solutions of the following acid and base:KOH(aq) + HBr(aq) What are the reaction products? Does the reaction yield an acidic, basic, or neutral aqueous solution?
Acids / Bases |
Reactions |
pH
|
Acids_and_Bases : LewisAcidBaseRxns (19 Variations)
Identify the Lewis Acid and Base in the reaction of Ag+ and NH3 to form Ag(NH3)2+
Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
Lewis Acids / Bases
|
Aldehyde and Ketone Addition (2 Variations)
A collection of 2 assessment questions about Aldehyde and Ketone Addition
Aldehydes / Ketones |
Acids / Bases |
Reactions
|
Acids_and_Bases : IonizationSteps (20 Variations)
Citric acid (which is a triprotic acid) has the following structure:
Which of the following equations corresponds to the first ionization step of the acid?
Acids / Bases |
Reactions |
Aqueous Solution Chemistry
|
Acids_and_Bases : MolcScaleAcidBase (10 Variations)
Study the four drawings below and then decide which best represents an aqueous solution that has
(Water molecules are not shown in the diagrams.)
Acids / Bases |
Reactions |
Aqueous Solution Chemistry
|
Acids_and_Bases : ConjugateAcidBase (20 Variations)
Identify the acid and base that are reactants and the conjugate acid and conjugate base that are products in the following equation:
HI(aq) + H2O(l)  H3O+(aq) + I-(aq)
Acids / Bases |
Reactions |
Aqueous Solution Chemistry
|
Acids_and_Bases : HendersonHassel (20 Variations)
You may want to use the following acid/base table to answer the question below.
Papain is a thiol protease isolated from papaya. The optimal pH for its enzymatic activity is 6.0-7.0. Which of the following buffering systems would work best for a laboratory experiment requiring active papain at pH 6.5? What molar ratios of the compounds would you use to prepare the solution?
Acids / Bases |
Reactions |
Aqueous Solution Chemistry
|
Acids_and_Bases : IDLewisAcidBase (20 Variations)
Which of the following is a Lewis acid?
Acids / Bases |
Reactions |
Aqueous Solution Chemistry
|
Acids_and_Bases : ReactProductFavored (20 Variations)
You may want to use the following acid/base table to answer the question below. Which of the following reactions will be product -favored?
Acids / Bases |
Reactions |
Aqueous Solution Chemistry
|
Acids_and_Bases : WeakStrongAcidPics (11 Variations)
Which diagram best represents an aqueous solution of HCl? (Water is not shown.) 
Acids / Bases |
Reactions |
Aqueous Solution Chemistry
|
Acids_and_Bases : ChooseIndicator (8 Variations)
A 25.0 mL aliquot of a 1.44M solution of ammonia (Kb = 1.8 x 10-5) is titrated with 1.50M HCl. Use the Indicator Table below to decide which of the indicators listed would most accurately signal the equivalence point for this titration. 
Write the letter corresponding to your choice of indicator in the box.
Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
pH
|
Acids_and_Bases : SolnGrams (20 Variations)
How many grams of sodium hydroxide (NaOH) must be dissolved in 510 ml of water to make a solution with a pH = 8.1?
Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
pH
|
Acids_and_Bases : ProtonTransferRxn (20 Variations)
Write an equation to describe the proton transfer that occurs when the following acid is added to water: HSO4-
Enter the products in the space below using the following as an example:
What ions are present in an aqueous calcium nitrate solution?
Ca(NO3)2(aq) Ca2+(aq) + 2NO3-(aq)
In this case, the answer would be: Ca2+(aq) + 2NO3-(aq)
You should enter: Ca^(2+) + 2NO3^(-)
In other words, use the ^ to indicate superscripts; put charges in parentheses; and leave a space on either side of the + sign. Your answer must be an exact match for the computer to grade it correctly, so be careful.
What products will result when HSO4- is added to water?
Acids / Bases |
Reactions |
Aqueous Solution Chemistry
|
AcidBaseProducts (10 variations)
The following acid/base table may be useful in answering the question below. What products will result when HSO4- is added to water? Complete and balance the reaction below. HSO4- + H2O ?
Acids / Bases |
Reactions |
Aqueous Solution Chemistry
|
Acids_and_Bases : AcidBaseProperties (10 Variations)
Which of the following are properties of HCl?
Acids / Bases |
Reactions |
Aqueous Solution Chemistry
|
Acids_and_Bases : AcidicOrBasicSalt (20 Variations)
When dissolved in an aqueous solution, which of the following salts will yield an acidic solution?
Acids / Bases |
Reactions |
Aqueous Solution Chemistry
|
Acids_and_Bases : PercentDissociationKa (3 Variations)
Calculate the percent dissociation in a {x}M aqueous solution of the weak acid HA. (Ka = {y} x 10-4)
Enter your answer to ONE decimal place.
DO NOT use scientic notation.
DO NOT write in the units.
Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
Equilibrium
|
Acids_and_Bases : TitrationCurveKaKb (8 Variations)
Study the graph of the titration of a weak acid with a strong base shown below. What is the approximate Ka for this acid? 
Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
Titration / Volumetric Analysis
|
Acids_and_Bases : PracticalAcidBase (20 Variations)
Which of the following statements is true?
Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
Physical Properties
|
Acids_and_Bases : WaterAutoIonization (20 Variations)
What effect will the addition of H2CO3 have on the autoionization of water?
Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
Water / Water Chemistry
|
Acids_and_Bases : WeakAcidSolnpH (20 Variations)
Given an aqueous solution of 0.30 M acetic acid (Ka = 1.8 x 10-5), the pH is approximately ...
Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
pH |
Equilibrium
|
Acids_and_Bases : BufferingCapacity (20 Variations)
If a buffer is prepared using 0.75 mol CH3COOH and 0.45 mol CH3COO- in 1 liter of aqueous solution, is the buffering capacity of the solution great enough to maintain its pH if 10 g NaOH is added?
Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
pH |
Equilibrium
|
Acids_and_Bases : pHDilution (6 Variations)
What is the pH of a solution made by diluting {x} mL of {y} M HNO3(aq) to a total volume of 500 mL?
Enter your answer to two decimal places.
DO NOT use scientific notation
Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
pH |
Equilibrium
|
Acids_and_Bases : pHBufferCalc (4 Variations)
Calculate the pH of a buffer solution containing {x}M NH3 and {y}M NH4NO3.
Enter your answer to TWO decimal places.
DO NOT use scientific notation.
DO NOT enter units
eg: 4.55
Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
pH |
Equilibrium
|
Acids_and_Bases : BufferWeakStrong (7 Variations)
How many mL of a 2.50 M HCl solution must be added to 500 mL of a 0.150 M CO32- solution to make a buffer with pH = 10.00?
Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
pH |
Equilibrium
|
Acids_and_Bases : CalcSolnpH (5 Variations)
Use this acid/base table to answer the question below.
Calculate the pH of a {x}M sodium acetate solution.
DO NOT use scientific notation
Enter your answer to two decimal places.
DO NOT enter units
Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
pH |
Equilibrium
|
Acids_and_Bases : BufferWeakWeak (14 Variations)
What mass of potassium bicarbonate (KHCO3) must be added to 500 mL of a 0.200 M carbonic acid solution to make a buffer with pH = 6.30?
Acids / Bases |
Reactions |
Aqueous Solution Chemistry |
pH |
Equilibrium
|
Aldol Reactions (30 Variations)
A collection of 30 assessment questions about Aldol Reactions
Aldehydes / Ketones |
Esters |
Amides |
Carboxylic Acids |
Mechanisms of Reactions |
Acids / Bases |
Reactions |
Synthesis |
Elimination Reactions |
Resonance Theory
|
