C8 Organic Chemistry

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Total cards: 24•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (24)

Front (Question)

what are FUELS?

Back (Answer)

react with O2 + release energy

Front (Question)

word equation for COMBUSTION

Back (Answer)

fuel + oxygen → carbon dioxide + water (+ energy)

Front (Question)

what type of reaction is combustion?

Back (Answer)

exothermic

Front (Question)

examples of FOSSIL FUEL

Back (Answer)

coal, natural gas, crude oil, petroleum

Front (Question)

as molecules get LARGER, what happens to BP? why?

Back (Answer)

BP increase (more atoms → stronger intermolecular force → more energy needed to break the bonds)

Front (Question)

as molecules get LARGER, what happens to VISCOSITY and VOLATILITY?

Back (Answer)

viscosity: increase volatility: decrease

Front (Question)

how does FRACTIONAL DISTILLATION of crude oil work?

Back (Answer)

crude oil is a MIXTURE of hydrocarbon molecules with DIFFERENT BP → CONDENSE AT DIFFERENT TEMP. • less C atom → low BP → evaporate, rise, condense at top (lower temp) → collected • more C atom → high BP → condense at bottom (higher temp) → collected

Front (Question)

after the fractional distillation of crude oil, how can each section be used?

Back (Answer)

Front (Question)

define hydrocarbon

Back (Answer)

contain only hydrogen and carbon atoms

#10

Front (Question)

what does combustion of hydrocarbon produce?

Back (Answer)

CO2 + H2O

#11

Front (Question)

general formula for ALKANE

Back (Answer)

C(n) H(2n+2)

#12

Front (Question)

general formula for ALKENE

Back (Answer)

C(n) H(2n)

#13

Front (Question)

general formula for ALCOHOL

Back (Answer)

C(n) H(2n+1) OH

#14

Front (Question)

difference between ALKANE and ALKENE in terms of bond and property

Back (Answer)

ALKANE: only single covalent bond → saturated → unreactive ALKENE: one C=C double bond + single covalent bond → unsaturated → reactive

#15

Front (Question)

uses of ALKANE

Back (Answer)

fuel (burn in air) produce alkene by cracking

#16

Front (Question)

uses of ALKENE

Back (Answer)

fuel making plastic

#17

Front (Question)

what test do you carry out to distinguish alkane and alkene?

Back (Answer)

ALKENE decolorizes bromine water it’s more reactive so it reacts with bromine

#18

Front (Question)

what is the formula for METHANE and ETHANE ? how do their molecular structures look like?

Back (Answer)

methane: CH4 ethane: C2H6 check drawing on notes:)

#19

Front (Question)

what is the formula for ETHENE ? how does its molecular structure look like?

Back (Answer)

ethene: C2H4 check drawing on notes:)

#20

Front (Question)

what is the formula for METHANOL ? how does its molecular structure look like?

Back (Answer)

CH3OH check drawing on notes:)

#21

Front (Question)

what is CRACKING?

Back (Answer)

breaking up larger hydrocarbon molecules into smaller ones (e.g. alkane → alkene)

#22

Front (Question)

describe the process of CRACKING EXPERIMENT

Back (Answer)

#23

Front (Question)

what are the properties and uses of shorter & longer chains of hydrocarbon?

Back (Answer)

short: burn more easily+completely → fuel long: can be used under high temp. → lubricate machinery

#24

Front (Question)

use of GASOLINE and DIESEL

Back (Answer)

fuel in cars