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UNIT 3: SECTION 1 - ORGANIC INTRO

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

Card preview (8)

#1
Front (Question)

Define empirical formula.

Back (Answer)

Simplest ratio of atoms in a compound.

#2
Front (Question)

Define molecular formula.

Back (Answer)

Actual number of atoms in a compound.

#3
Front (Question)

Define structural formula.

Back (Answer)

The atoms arranged carbon by carbon with their extra atoms.

#4
Front (Question)

Define skeletal formula.

Back (Answer)

Bonds of carbon skeleton are shown by lines, no hydrogens are not shown - only functional groups.

#5
Front (Question)

Define displayed formula.

Back (Answer)

The arrangement of atoms, and the bonds between them, in a molecule.

#6
Front (Question)

What is a homologous series.

Back (Answer)

Group of compounds containing the same functional group - they differ by the number of ‘CH2’s. Functional group is the reactive part.

#7
Front (Question)

What are 3 structural isomers, and what is a structural isomer?

Back (Answer)

Structural isomers are atoms with the same molecular formula, but arranged differently. Chain - different carbon skeleton arrangement. Functional - different functional groups. Positional - different functional group pos.

#8
Front (Question)

Stereoisomers.

Back (Answer)

Different spatial arrangement. Double bonds can’t rotate - rigid. Alkenes planar. E & Z isomers: Entgegen and Zuzammen Opposite and same side Atom with higher atomic number take priority.