Benzene Structure and Properties

Benzene Structure and Properties

Assessment

Interactive Video

Chemistry

11th - 12th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video explores the historical and scientific journey of understanding benzene's structure. It begins with Kekulé's ring structure proposal inspired by a dream, followed by Pauling's resonance hybrid model. Evidence against these models is presented, including bond lengths and enthalpy discrepancies. Kathleen Lansdale's x-ray crystallography work further disproves Kekulé's model by showing equal bond lengths in benzene. The video concludes with laboratory evidence and a summary of benzene's true structure.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What was the main inspiration behind Kekulé's original proposal for benzene's structure?

A dream about a snake

A mathematical equation

A chemical experiment

A historical document

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What did Kekulé propose about the structure of benzene?

It is a branched chain hydrocarbon

It is a straight chain hydrocarbon

It has alternating double and single carbon-carbon bonds

It is a single carbon-carbon bond

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which scientist initially supported the resonance hybrid model for benzene?

Niels Bohr

Marie Curie

Linus Pauling

Albert Einstein

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why was the resonance hybrid model for benzene eventually disproved?

Benzene is not reactive with water

Benzene does not exhibit expected behaviors of alkenes

Benzene has similar properties to alkanes

Benzene is a gas at room temperature

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main flaw in Kekulé's model of benzene?

It indicates benzene is a metal

It assumes benzene behaves like an alkene

It suggests benzene has unequal bond lengths

It predicts benzene is a gas

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What did Kathleen Lansdale prove about benzene using X-ray crystallography?

Benzene is a linear molecule

Benzene has equal bond lengths

Benzene has unequal bond lengths

Benzene is a branched molecule

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the significance of benzene's bond lengths being equal?

It confirms benzene is a straight chain

It supports the idea of a perfect hexagon

It indicates benzene is highly reactive

It suggests benzene is a gas

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