https://www.deped.gov.ph/wp-content/uploads/2019/01/General-Chemistry-1-and-2.pdf General Chemistry GenChem STEM Science, Technology, Engineering, and Mathematics K to 12 Senior High School STEM Specialized Subject – General Chemistry 1 and 2 Quarter 1 – General Chemistry 1 Matter and Its Properties Measurements Atoms, Molecules and Ions Stoichiometry Percent Composition and Chemical Formulas Chemical reactions and chemical equations Mass Relationships in Chemical Reactions Gases Dalton’s Law of partial pressures Gas stoichiometry Kinetic molecular theory of gases Quarter 2 – General Chemistry 1 Electronic Structure of Atoms Electronic Structure and Periodicity Chemical Bonding Organic compounds Quarter 3 – General Chemistry 2 Intermolecular Forces and Liquids and Solids Physical Properties of Solutions Thermochemistry Chemical Kinetics Quarter 4 – General Chemistry 2 Chemical Thermodynamics Chemical Equilibrium Acid-Base Equilibria and Salt Equilibria Electrochemistry

1. Quarter II General Chemistry 1
Organic Compounds
STEM_GC11OCIIg-j-(84to98)
Multiple-Choice Test
Choose the letter of the correct answer. Write your answer on the space provided
before each number.
___1. Alkanes are hydrocarbons that contain only
A. carbon-carbon bonds.
B. single covalent bonds.
C. carbon-hydrogen bonds.
D. ionic bonds.
___2. The carbon-carbon bonds in a benzene molecule are
A. alternating double and single bonds.
B. identical hybrid bonds.
C. all double bonds.
D. all single bonds.
___3. Coal usually generates more soot (unburned carbon particles) than does
petroleum or natural gas because coal
A. contains more aromatic compounds.
B. contains more aliphatic compounds.
C. is a solid.
D. contains sulfur compounds.
___4. A carbon atom with four different groups attached is called a(n)
__________ carbon.
A. geometric
B. asymmetric
C. stereo
D. optical
___5. A carbon atom that has four different substituents always forms a(n)
A. optical isomer.
B. saturated hydrocarbon.
C. geometric isomer.
D. unsaturated hydrocarbon.

2. Quarter II General Chemistry 1
Organic Compounds
STEM_GC11OCIIg-j-(84to98)
Multiple-Choice Test
___6. When naming a branched hydrocarbon, the base name for the compound
comes from the name of the
A. shortest carbon chain
B. position of the first branch.
C. total number of carbon atoms.
D. longest carbon chain.
___7. When an alkane has a benzene ring as a substituent, the ring is called
a(n)
A. benzene group.
B. toluene group.
C. phenyl group.
D. arene group.
___8. Structural isomers are compounds with the same molecular formula but
A. a different number of bonds.
B. different types of bonds.
C. different substituents.
D. a different order of atoms.
___9. The carbon-carbon bonds in alkanes can rotate relative to each other. For
this reason, alkanes do NOT form
A. structural isomers.
B. optical isomers.
C. any isomers.
D. geometric isomers.
___10. Substituent groups on opposite sides of a double bond are said to be in
the __________ configuration. If the groups are on the same side of the bond,
then they are in the __________ configuration.
A. cis, trans
B. trans, cis
C. trans, iso
D. stereo, cis

3. Quarter II General Chemistry 1
Organic Compounds
STEM_GC11OCIIg-j-(84to98)
Multiple-Choice Test
___11. Here are carbon skeletons for two compounds: C−C−C−C≡C and
C−C=C−C−C. What, in order, are the general names for these compounds?
A. alkyne and alkene
B. alkene and alkane
C. alkyne and alkane
D. alkene and alkyne
___12. Because carbon has __________ valence electrons, it can form __________
bonds.
A. four, four covalent
B. four, four ionic
C. six, six covalent
D. six, four or fewer covalent
___13. Alkanes that do NOT contain a ring structure are __________
hydrocarbons. Alkanes that do contain ring structures are called __________
hydrocarbons.
A. aliphatic, aromatic
B. aromatic, aliphatic
C. aliphatic, cyclic
D. aromatic, cyclic
___14. Which of the following is NOT a fossil fuel?
A. Petroleum
B. natural gas
C. coal
D. alcohol
___15. What is the correct name for a compound with a C−C−C=C−C carbon
skeleton?
A. Pentene
B. 2-pentene
C. 3-pentene
D. 4-pentene

4. Quarter II General Chemistry 1
Organic Compounds
STEM_GC11OCIIg-j-(84to98)
Multiple-Choice Test
___16. When another atom or group of atoms takes the place of a hydrogen
atom in a hydrocarbon, the atom or group is called a
A. substituent.
B. substitution.
C. replacement.
D. branch.
___17. Crude oil is separated into gasoline, kerosene, and other products by
means of
A. combustion.
B. fractional distillation.
C. cracking.
D. a catalyst.
___18. Why are most hydrocarbon molecules nonpolar?
A. The atoms share electrons almost equally.
B. There are strong intermolecular forces.
C. They are not water soluble.
D. They do not form ions.
___19. Alkanes and alkynes are called unsaturated compounds because they
contain
A. single bonds only.
B. double or triple bonds.
C. oxygen atoms.
D. hydrogen atoms.
___20. Which of the following substances is an alkyne?
A. C6H12
B. C2H4
C. C2H2
D. C4H8

5. Quarter II General Chemistry 1
Organic Compounds
STEM_GC11OCIIg-j-(84to98)
Multiple-Choice Test
___21. The product of the reaction between an alcohol and a carboxylic acid is
called a(n)
A. ketone.
B. ether.
C. ester.
D. aldehyde.
___22. The physical properties of addition polymers are controlled by adjusting
the
A. length of the carbon chain.
B. temperature of the reaction.
C. catalyst used in the reaction.
D. number of substituents.
___23. Which compound is an aromatic compound?
A. propanol
B. butanol
C. methanol
D. phenol
___24. Dehydrogenation is an example of a(n)
A. oxidation reaction because electrons are lost from the organic molecule.
B. reduction reaction because electrons are lost from the organic molecule.
C. oxidation reaction because electrons are gained by the organic molecule.
D. reduction reaction because electrons are gained by the organic molecule.
___25. The oxidation of an aldehyde produces a(n)
A. alcohol.
B. ketone.
C. carboxylic acid.
D. ester.

6. Quarter II General Chemistry 1
Organic Compounds
STEM_GC11OCIIg-j-(84to98)
Multiple-Choice Test
___26. Which alcohols are soluble in water in all proportions?
A. alcohols with more than four carbons
B. all alcohols
C. alcohols with fewer than five carbons
D. alcohols in which the OH group is bonded to the central atom
___27. Which formula represents an aldehyde?
A. CH3COOH
B. CH3CH2OH
C. CH3COCH3
D. CH3CHO
___28. What is the correct name for the compound CH3−CHI−CH3?
A. 2-iodopropane
B. 1-iodo-1-methylethane
C. 2-iodomethylmethane
D. 2-iodobutane
___29. Which compound is a halocarbon?
A. CH3CH2OH
B. CH2ClCH2Cl
C. CH3CH2NH2
D. CH2=CHCH2
___30. The compound p-dichlorobenzene is an example of a(n) __________
halide.
A. aryl
B. methyl
C. alkyl
D. pentyl

7. Quarter II General Chemistry 1
Organic Compounds
STEM_GC11OCIIg-j-(84to98)
Multiple-Choice Test
___31. Nitrogen-fixing bacteria convert atmospheric nitrogen into __________, a
water soluble form of nitrogen that can be used by plants.
A. Ammonia
B. Urea
C. Ribose
D. amino acids
___32. The biological breakdown of starch into glucose molecules in an example
of
A. oxidation.
B. combustion.
C. catabolism.
D. anabolism.
___33. Proteins are polymers of
A. simple sugars.
B. nucleotides.
C. amino acids.
D. fatty acids.
___34. Most carbohydrates have the general formula
A. Cn(H2O)2n.
B. (COH)n.
C. Cn(OH)2n.
D. Cn(H2nO).
___35. Differences in the chemical properties of peptides result from differences
in the __________ sequence.
A. amino acid
B. carbohydrate
C. protein
D. phospholipid

8. Quarter II General Chemistry 1
Organic Compounds
STEM_GC11OCIIg-j-(84to98)
Multiple-Choice Test
___36. Phospholipids can function in cell membranes because the molecules
have
A. a nitrate group.
B. a sulfate group.
C. one water-soluble end.
D. three fatty acids.
___37. Energy is stored in ATP when a phosphate unit is bonded to
A. glucose.
B. ribose.
C. DNA.
D. ADP.
___38. Scientists developed bacteria capable of producing human insulin by
inserting a foreign gene into bacterial DNA. This technique is an example of
A. DNA fingerprinting.
B. recombinant DNA technology.
C. gene mutation.
D. cloning.
___39. Each word in the genetic code consists of a sequence of three
A. deoxyribose units.
B. RNA molecules.
C. bases.
D. amino acids.
___40. Some vitamins participate in biological processes as
A. peptides.
B. amino acids.
C. enzymes.
D. coenzymes.

9. QuarterIIGeneralChemistry1
OrganicCompounds
STEM_GC11OCIIg-j-(84to98)
Multiple-ChoiceTest
CORRECTANSWERS:
1.Alkanesarehydrocarbonsthatcontainonly
CORRECT:singlecovalentbonds.
2.Thecarbon-carbonbondsinabenzenemoleculeare
CORRECT:identicalhybridbonds.
3.Coalusuallygeneratesmoresoot(unburnedcarbonparticles)thandoes
petroleumornaturalgasbecausecoal
CORRECT:containsmorearomaticcompounds.
4.Acarbonatomwithfourdifferentgroupsattachediscalleda(n)__________
carbon.
CORRECT:asymmetric
5.Acarbonatomthathasfourdifferentsubstituentsalwaysformsa(n)
CORRECT:opticalisomer.
6.Whennamingabranchedhydrocarbon,thebasenameforthecompound
comesfromthenameofthe
CORRECT:longestcarbonchain.
7.Whenanalkanehasabenzeneringasasubstituent,theringiscalleda(n)
CORRECT:phenylgroup.
8.Structuralisomersarecompoundswiththesamemolecularformulabut
CORRECT:adifferentorderofatoms.
9.Thecarbon-carbonbondsinalkanescanrotaterelativetoeachother.For
thisreason,alkanesdoNOTform
CORRECT:geometricisomers.
10.Substituentgroupsonoppositesidesofadoublebondaresaidtobeinthe
__________configuration.Ifthegroupsareonthesamesideofthebond,
thentheyareinthe__________configuration.
CORRECT:trans,cis

10. QuarterIIGeneralChemistry1
OrganicCompounds
STEM_GC11OCIIg-j-(84to98)
Multiple-ChoiceTest
11.Herearecarbonskeletonsfortwocompounds:C−C−C−C≡Cand
C−C=C−C−C.What,inorder,arethegeneralnamesforthesecompounds?
CORRECT:alkyneandalkene
12.Becausecarbonhas__________valenceelectrons,itcanform__________
bonds.
CORRECT:four,fourcovalent
13.AlkanesthatdoNOTcontainaringstructureare__________hydrocarbons.
Alkanesthatdocontainringstructuresarecalled__________hydrocarbons.
CORRECT:aliphatic,cyclic
14.WhichofthefollowingisNOTafossilfuel?
CORRECT:alcohol
15.WhatisthecorrectnameforacompoundwithaC−C−C=C−Ccarbon
skeleton?
CORRECT:2-pentene
16.Whenanotheratomorgroupofatomstakestheplaceofahydrogenatom
inahydrocarbon,theatomorgroupiscalleda
CORRECT:substituent.
17.Crudeoilisseparatedintogasoline,kerosene,andotherproductsby
meansof
CORRECT:fractionaldistillation.
18.Whyaremosthydrocarbonmoleculesnonpolar?
CORRECT:Theatomsshareelectronsalmostequally.
19.Alkanesandalkynesarecalledunsaturatedcompoundsbecausethey
contain
CORRECT:doubleortriplebonds.
20.Whichofthefollowingsubstancesisanalkyne?
CORRECT:C2H2
21.Theproductofthereactionbetweenanalcoholandacarboxylicacidis
calleda(n)
CORRECT:ester.

11. QuarterIIGeneralChemistry1
OrganicCompounds
STEM_GC11OCIIg-j-(84to98)
Multiple-ChoiceTest
22.Thephysicalpropertiesofadditionpolymersarecontrolledbyadjustingthe
CORRECT:lengthofthecarbonchain.
23.Whichcompoundisanaromaticcompound?
CORRECT:phenol
24.Dehydrogenationisanexampleofa(n)
CORRECT:oxidationreactionbecauseelectronsarelostfromtheorganic
molecule.
25.Theoxidationofanaldehydeproducesa(n)
CORRECT:carboxylicacid.
26.Whichalcoholsaresolubleinwaterinallproportions?
CORRECT:alcoholswithfewerthanfivecarbons
27.Whichformularepresentsanaldehyde?
CORRECT:CH3CHO
28.WhatisthecorrectnameforthecompoundCH3−CHI−CH3?
CORRECT:2-iodopropane
29.Whichcompoundisahalocarbon?
CORRECT:CH2ClCH2Cl
30.Thecompoundp-dichlorobenzeneisanexampleofa(n)__________halide.
CORRECT:aryl
31.Nitrogen-fixingbacteriaconvertatmosphericnitrogeninto__________,a
watersolubleformofnitrogenthatcanbeusedbyplants.
CORRECT:ammonia
32.Thebiologicalbreakdownofstarchintoglucosemoleculesinanexampleof
CORRECT:catabolism.
33.Proteinsarepolymersof
CORRECT:aminoacids.
34.Mostcarbohydrateshavethegeneralformula
CORRECT:Cn(H2nO).

12. QuarterIIGeneralChemistry1
OrganicCompounds
STEM_GC11OCIIg-j-(84to98)
Multiple-ChoiceTest
35.Differencesinthechemicalpropertiesofpeptidesresultfromdifferencesin
the__________sequence.
CORRECT:aminoacid
36.Phospholipidscanfunctionincellmembranesbecausethemoleculeshave
CORRECT:onewater-solubleend.
37.EnergyisstoredinATPwhenaphosphateunitisbondedto
CORRECT:ADP.
38.Scientistsdevelopedbacteriacapableofproducinghumaninsulinby
insertingaforeigngeneintobacterialDNA.Thistechniqueisanexampleof
CORRECT:recombinantDNAtechnology.
39.Eachwordinthegeneticcodeconsistsofasequenceofthree
CORRECT:bases.
40.Somevitaminsparticipateinbiologicalprocessesas
CORRECT:coenzymes.