| Assessment Questions: 54 results |
Matter_and_Measurement : CompareFCTemps (10 Variations)
Which is the higher temperature, 350oC or 350oF?
Chemometrics |
Nomenclature / Units / Symbols
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Matter_and_Measurement : ConvertUnits (10 Variations)
Your textbook is approximately 8.75 inches by 10.25 inches. What are these measurements in centimeters?
Chemometrics |
Nomenclature / Units / Symbols
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Organic : AlcoholClassification (10 Variations)
Match the following alcohols to the proper classification. (You may not need to use all of the classifications.)
Alcohols |
Nomenclature / Units / Symbols
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Stoichiometry : AtomsAndGrams (10 Variations)
How many moles of atoms does a 500. g bar of gold contain?
Stoichiometry |
Nomenclature / Units / Symbols
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Atoms,_Molecules_and_Ions : MolcFormulaTypes (8 Variations)
The structural formula for 2-methyl-butane is given below. What is the molecular formula for 2-methyl-butane? 
Nomenclature / Units / Symbols
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Matter_and_Measurement : ConversionFactor (4 Variations)
Which conversion factor is needed to complete the dimensional analysis for the following problem?
It costs $3 per package of 10 pairs of socks. How much does 2 pairs of socks cost?
Chemometrics |
Nomenclature / Units / Symbols
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Atoms,_Molecules_and_Ions : ElementSpelling (10 Variations)
Which of the following elements are spelled incorrectly?
Nomenclature / Units / Symbols
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Atoms,_Molecules_and_Ions : IonicName (10 Variations)
What is the name of MgS?
Nomenclature / Units / Symbols
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Atoms,_Molecules_and_Ions : NameFromFormula (16 Variations)
What is the name of N2H4?
Nomenclature / Units / Symbols
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Atoms,_Molecules_and_Ions : NameIonFromFormula (16 Variations)
The name of NH4+ is the __________ ion. Write the name of the ion in the box below. Be careful, spelling counts.
Nomenclature / Units / Symbols
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Organic : AlkaneNomenclature (10 Variations)
What is the correct name for the following compound:
CH3CH2CH2CH3
Alkanes / Cycloalkanes |
Nomenclature / Units / Symbols
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Thermochemistry : ConvertEnergyUnits (4 Variations)
The label on a granola bar says it provides 120 Calories. How many kilojoules of energy will this bar provide if it is completely metabolized?
Calorimetry / Thermochemistry |
Nomenclature / Units / Symbols
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Solutions : ConvertConcUnits (10 Variations)
The maximum concentration of arsenic in drinking water that is allowed by the EPA is 0.050 mg/L. Express this as a weight percent. (You can assume the density of the water solution is 1.0g/mL.)
Solutions / Solvents |
Nomenclature / Units / Symbols |
Chemometrics
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Solutions : GramsToMolalSoln (20 Variations)
How many grams of citric acid need to be added to 750 ml of ethanol to make a 0.50 m solution?
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Density (g/ml)
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Molecular Weight (g/mol)
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Citric acid
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1.665
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192.14
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Ethanol
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0.7893
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46.07
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Solutions / Solvents |
Nomenclature / Units / Symbols |
Chemometrics
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Solutions : WtPercentToMolarity (4 Variations)
A common concentration unit used commercially is percent weight per volume (%W/V) which is the number of grams of solute in 100 mL of solution. A bottle of vinegar contains 5 %W/V acetic acid (CH3COOH). What is the molar concentration of acetic acid in the vinegar?
Solutions / Solvents |
Nomenclature / Units / Symbols |
Chemometrics
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Solutions : CalcMolarityFromPPT (10 Variations)
You are given a water sample to analyze from a lake contaminated with lead. It takes 24 mL of 0.020 M NaCl to exactly precipitate the Pb2+ ions from 61 mL of the water sample. What is the concentration of Pb2+ ions in the water?
Pb2+(aq) + 2NaCl(aq) PbCl2(s) + 2Na+(aq)
Solutions / Solvents |
Nomenclature / Units / Symbols |
Chemometrics
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Atomic_Structure_and_the_Periodic_Table : ParaDiMagnetVideo (8 Variations)
The video shows a substance being slowly moved toward a large magnet. Which of the following ions could be in the compound seen in the video?
Atomic Properties / Structure
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Atomic_Structure_and_the_Periodic_Table : ElectronBoxConfig (10 Variations)
Which of the elements or ions below has the following orbital box diagram?
Atomic Properties / Structure
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Atomic_Structure_and_the_Periodic_Table : BohrConceptMap (4 Variations)
In a concept map the terms are connected with arrows. The words along an arrow can be placed between the words in two ovals to make a true statement.
An incomplete concept map is shown below, which set of terms for A, B, C and D would result in a correct map based on the concept of wave mechanics applied to a hydrogen atom?
Atomic Properties / Structure
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Atomic_Structure_and_the_Periodic_Table : MatchElectronConfig (10 Variations)
Match the following electron configurations to the correct atoms or ions.
Possible choices are: Br, Ca, Cl-, Mg2+, Mn, and Ti2+.
Atomic Properties / Structure
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Atomic_Structure_and_the_Periodic_Table : ValenceTotalElectrons (10 Variations)
Given the following electron configuration:
1s22s22p63s2
1. How many total electrons are in this species? {1:SHORTANSWER:~=12}
2. How many valence electrons are in this species? {1:SHORTANSWER:~=2}
Atomic Properties / Structure
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Atomic_Structure_and_the_Periodic_Table : AtomicNumElecConfig (10 Variations)
An element X has atomic number 13. Which of the following statements about the electron configuration of X is correct?
Atomic Properties / Structure
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Atomic_Structure_and_the_Periodic_Table : ColorFromFrequency (10 Variations)
According to the electromagnetic spectrum, what color is light that has a frequency of 6.95x1014Hz?
Atomic Properties / Structure
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Atomic_Structure_and_the_Periodic_Table : CompareEMRadiation (12 Variations)
Which of the following have photons with less energy than those of blue light?
Atomic Properties / Structure
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Atomic_Structure_and_the_Periodic_Table : CorrectBoxDiagram (10 Variations)
Which of the following orbital box diagrams is correct?
Atomic Properties / Structure
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Atomic_Structure_and_the_Periodic_Table : EnergyInEinstein (10 Variations)
Calculate the energy of one mole of photons (an Einstein) for the 589 nm yellow line of the sodium spectrum.
Atomic Properties / Structure
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Atomic_Structure_and_the_Periodic_Table : GeneralOrbitals (4 Variations)
Which of the following statements about orbitals in multi-electron atoms is CORRECT?
Atomic Properties / Structure
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Atoms,_Molecules_and_Ions : DescrSubatmParts (8 Variations)
Identify each of the following statements as describing a proton, neutron, or electron.
Atomic Properties / Structure
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Atoms,_Molecules_and_Ions : CalcAtmWeight (10 Variations)
Chlorine has two naturally occurring isotopes, 35Cl and 37Cl, with masses of 34.9689 amu and 36.9659 amu, respectively. Calculate the abundances of these isotopes of chlorine.
Atomic Properties / Structure |
Isotopes
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Atoms,_Molecules_and_Ions : ElemtAndSubatmParts (10 Variations)
Give the number of electron, protons, and neutrons in an atom of 14C.
Atomic Properties / Structure
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Atoms,_Molecules_and_Ions : GeneralSubatmParts (7 Variations)
Which two of the subatomic particles have equal, but opposite, charges?
Atomic Properties / Structure
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Atoms,_Molecules_and_Ions : NameIsotope (10 Variations)
Which of the following represents an atom that has 19 protons, 19 electrons, and 21 neutrons?
Atomic Properties / Structure |
Isotopes
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Alkenes (16 Variations)
A collection of 16 assessment questions about Alkenes
Alkenes |
Reactions |
Nomenclature / Units / Symbols |
Stereochemistry |
Addition Reactions
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Nomenclature (1 Variations)
A collection of 1 assessment questions about Nomenclature
Aldehydes / Ketones |
Nomenclature / Units / Symbols |
Amines / Ammonium Compounds |
Carboxylic Acids
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Alkanes (22 Variations)
A collection of 22 assessment questions about Alkanes
Alkanes / Cycloalkanes |
Conformational Analysis |
Nomenclature / Units / Symbols |
Lewis Structures |
Stereochemistry |
Reactions
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Alkenes and Alkynes (31 Variations)
A collection of 31 assessment questions about Alkenes and Alkynes
Alkenes |
Addition Reactions |
Alkynes |
Carbocations |
Stereochemistry |
Reactions |
Nomenclature / Units / Symbols |
Alcohols |
Epoxides |
Oxidation / Reduction |
Grignard Reagents
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Molecular_Structure : AtomFromGeometry (8 Variations)
Which atom or atoms could be the central atom, X, in the stable molecule XH3 with one lone pair of electrons?
Atomic Properties / Structure |
Periodicity / Periodic Table
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Stoichiometry : CompareParticles (20 Variations)
Which has the greater number of particles, 1 mol O2 or 1 mol O?
Molecular Properties / Structure |
Atomic Properties / Structure
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Atomic_Structure_and_the_Periodic_Table : CompareElectConfigs (8 Variations)
Compare the following two elements, identified by their electron configurations:
A - [Kr]4d95s2
B - [Ar]3d104s24p4
Select the answer(s) that has the correct comparison between elements.
Atomic Properties / Structure |
Periodicity / Periodic Table
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Atomic_Structure_and_the_Periodic_Table : CompareRadii (10 Variations)
Which of the following have larger radii than a fluorine atom?
Atomic Properties / Structure |
Periodicity / Periodic Table
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Atomic_Structure_and_the_Periodic_Table : ExplainPeriodicTrends (10 Variations)
In an isoelectronic series the ionic radii...
Atomic Properties / Structure |
Periodicity / Periodic Table
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Atomic_Structure_and_the_Periodic_Table : GeneralPeriodicTrends (5 Variations)
Which of the following statements is an INCORRECT description of periodic trends for main group elements?
Atomic Properties / Structure |
Periodicity / Periodic Table
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Atomic_Structure_and_the_Periodic_Table : IonizationEnerTrends (10 Variations)
Which of the following groups of elements is arranged correctly in order of increasing first ionization energy?
Atomic Properties / Structure |
Periodicity / Periodic Table
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Atomic_Structure_and_the_Periodic_Table : Isoelectronic (4 Variations)
Which of the following atoms or ions does NOT have an electron configuration of [He]2s22p6?
Atomic Properties / Structure |
Periodicity / Periodic Table
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Atoms,_Molecules_and_Ions : IonCharge (12 Variations)
Identify each of the following ions as having the correct or incorrect charge.
Atomic Properties / Structure |
Periodicity / Periodic Table
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Atoms,_Molecules_and_Ions : CompareElements (10 Variations)
Which of the following is something that nitrogen and antimony have in common?
Atomic Properties / Structure |
Periodicity / Periodic Table
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Atoms,_Molecules_and_Ions : IonChargeSubatmParts (10 Variations)
What is the charge on an ion that contains 47 protons, 62 neutrons, and 46 electrons?
Atomic Properties / Structure |
Periodicity / Periodic Table
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Aromatic (26 Variations)
A collection of 26 assessment questions about Aromatic
Aromatic Compounds |
Nomenclature / Units / Symbols |
Reactions |
Electrophilic Substitution |
Mechanisms of Reactions |
Oxidation / Reduction |
Resonance Theory |
Addition Reactions |
Carbocations |
Synthesis
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Stereochemistry (21 Variations)
A collection of 21 assessment questions about Stereochemistry
Stereochemistry |
Conformational Analysis |
Chirality / Optical Activity |
Alkanes / Cycloalkanes |
Alkenes |
Alcohols |
Enantiomers |
Diastereomers |
Carbohydrates |
Carboxylic Acids |
Nomenclature / Units / Symbols |
Esters
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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
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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
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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
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Reactions : IDOxidationNumber (10 Variations)
What is the oxidation number of sulfur in barium sulfate (BaSO4)?
Atomic Properties / Structure |
Periodicity / Periodic Table |
Molecular Properties / Structure
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Alcohols and Ethers (22 Variations)
A collection of 22 assessment questions about Alcohols and Ethers
Alcohols |
Synthesis |
Oxidation / Reduction |
Aldehydes / Ketones |
Alkenes |
Carboxylic Acids |
Grignard Reagents |
Ethers |
Reactions |
Mechanisms of Reactions |
Organometallics |
Nomenclature / Units / Symbols |
Physical Properties
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