Organic Chemistry II Lowersixth Science Chemistry

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Test your isomerism and organic basics.

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Organic Chemistry II Lowersixth Science Chemistry


Froggy Jumps Organic Chemistry II Lowersixth Science ChemistryVersion en ligne Test your isomerism and organic basics. par YAKILI LMS 1 What is the definition of isomerism? a Different formulas with similar names b Compounds with the same formula but different structures c Same structure and formula 2 What is a structural isomer? a Same formula, different connectivity b Different functional groups c Different formula, same connectivity 3 What are chain isomers? a Different carbon skeleton arrangements b Different moles of solute c Different boiling points 4 What are position isomers? a Different solvent polarity b Different molecular weight c Different position of a functional group 5 What are functional group isomers? a Different functional groups with same formula b Isomers with identical properties c Same functional group, different formula 6 Nomenclature uses the IUPAC system to name what? a Inorganic salts b Organic compounds c Isotopes and ions 7 What is the base name in organic nomenclature? a Highest molecular weight b Longest carbon chain c Most functional groups 8 What is a substituent in naming? a A solvent molecule b A side group replacing H c A catalyst 9 What is an aliphatic compound? a Aromatic only b Contain only halogens c Acyclic or alicyclic hydrocarbon 10 What is an aromatic compound? a A linear chain only b A ring with delocalized electrons c A saturated alkane 11 What does E/Z nomenclature describe? a R/S configuration b Isotopic labeling c Cis/trans geometry around double bonds 12 What is a stereoisomer? a Same formula, different spatial arrangement b Different formula and connectivity c Same arrangement and properties 13 What is a geometric isomer? a Constitutional isomerism b Cis/trans isomerism around double bond c Optical isomerism only 14 What is a chiral center? a A carbon with two identical groups b A carbon attached to four different groups c A double-bonded carbon 15 What is optical isomerism? a Identical molecules in all planes b Non-superimposable mirror images c Only geometric difference 16 What is a racemate (racemic mixture)? a Equal mix of enantiomers b Mix of diastereomers only c Pure single enantiomer 17 What does molecular formula plus structural formula provide? a Complete representation of compound b Only functional group data c Only mass information 18 What technique isolates a compound by polarity? a Crystallization only b Distillation c Chromatography 19 What technique separates by boiling point? a Distillation b Extraction c Chromatography 20 What is gas chromatography best for? a Separating volatile compounds b Titration of acids c Separating solids 21 What is a recrystallization used for? a Purifying solids b Measuring pH c Separating liquids 22 Which technique uses a solvent to pull out a compound? a Extraction b Distillation c Titration 23 What is acoustic extraction not used for? a Isolating alkaloids b Purifying plant compounds c Water purification (in lab context) 24 What is the purpose of a mordant in extraction? a Neutralize acid b Increase volatility c Enhance binding in dyes or metals 25 What is hydrolysis in organic synthesis? a Forming carbon-carbon bonds b Breaking bonds with water c Removing water only 26 What is a synthesis reaction? a A reaction that consumes water b Two or more reactants form a product c A reaction with no products 27 What is a dehydration synthesis? a Joining monomers with loss of water b Isolating water molecules c Adding water to break bonds 28 Which condition favors nucleophilic substitution? a Absence of solvent b Strongly acidic medium c Good leaving group and nucleophile 29 Which reaction forms esters? a Fischer esterification b Hydrogenation c Saponification (base) 30 What is a functional group in nomenclature? a A reactive site defining naming b A spectator ion c A solvent molecule 31 What is the purpose of isolation techniques? a Measure density only b Determine color only c Identify a compound and purify it 32 Which instrument analyzes mass? a Gas chromatograph b Mass spectrometer c NMR spectrometer 33 Which technique helps identify functional groups via infrared? a IR spectroscopy b Mass spec only c UV-Vis 34 What is an isomer that has the same connectivity but different spatial arrangement? a Structural isomer b Stereoisomer c Permissible isomer 35 Which term describes mirror-image non-superposables? a Conformers b Enantiomer c Diastereomer 36 Which is not a type of isomerism? a Isobarism b Geometric c Structural 37 What does empirical formula indicate? a A simple whole-number ratio of elements b Exact molecular structure c Mass of sample only 38 What does molecular formula indicate? a Physical state b Exact number of each atom c Color of compound 39 What is an alkane general formula? a CnH2n-2 b CnH2n c CnH2n+2 40 What is an alkene general formula? a CnH2n-2 b CnH2n+2 c CnH2n 41 What is a synonym for substitution reaction? a Elimination reaction b Nucleophilic substitution c Addition reaction 42 What is an elimination reaction? a Hydration only b Removal of small molecule to form unsaturation c Addition of small molecule 43 What is a hydration reaction? a Substitution with halogen b Removal of water c Addition of water across a double bond 44 What is stereochemistry concerned with? a Color changes b Solubility alone c 3D arrangement of atoms 45 Which technique uses polarity to separate compounds? a Thin-layer chromatography b Titration c Filtration 46 What describes bond rotation around single bonds? a Tautomerism b Conformational isomerism c Geometric isomerism 47 What is a tautomer? a Ions and radicals b Isomers rapidly interconverting c Permanent isomers only 48 Which method isolates organic acids from mixtures? a Acid-base extraction b Fractional distillation c Crystallization only 49 Which solvent removes nonpolar compounds best? a Water b Strong acid c Nonpolar solvent 50 Which extraction uses acid-base properties? a Gas absorption b Liquid-liquid extraction c Drying with drying agent

Organic Chemistry II Lowersixth Science Chemistry

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Organic Chemistry II Lowersixth Science ChemistryVersion en ligne

par YAKILI LMS

What is the definition of isomerism?

What is a structural isomer?

What are chain isomers?

What are position isomers?

What are functional group isomers?

Nomenclature uses the IUPAC system to name what?

What is the base name in organic nomenclature?

What is a substituent in naming?

What is an aliphatic compound?

What is an aromatic compound?

What does E/Z nomenclature describe?

What is a stereoisomer?

What is a geometric isomer?

What is a chiral center?

What is optical isomerism?

What is a racemate (racemic mixture)?

What does molecular formula plus structural formula provide?

What technique isolates a compound by polarity?

What technique separates by boiling point?

What is gas chromatography best for?

What is a recrystallization used for?

Which technique uses a solvent to pull out a compound?

What is acoustic extraction not used for?

What is the purpose of a mordant in extraction?

What is hydrolysis in organic synthesis?

What is a synthesis reaction?

What is a dehydration synthesis?

Which condition favors nucleophilic substitution?

Which reaction forms esters?

What is a functional group in nomenclature?

What is the purpose of isolation techniques?

Which instrument analyzes mass?

Which technique helps identify functional groups via infrared?

What is an isomer that has the same connectivity but different spatial arrangement?

Which term describes mirror-image non-superposables?

Which is not a type of isomerism?

What does empirical formula indicate?

What does molecular formula indicate?

What is an alkane general formula?

What is an alkene general formula?

What is a synonym for substitution reaction?

What is an elimination reaction?

What is a hydration reaction?

What is stereochemistry concerned with?

Which technique uses polarity to separate compounds?

What describes bond rotation around single bonds?

What is a tautomer?

Which method isolates organic acids from mixtures?

Which solvent removes nonpolar compounds best?

Which extraction uses acid-base properties?