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Organic Chemistry: Boiling and Melting Points

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Organic Chemistry: Boiling and Melting Points

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Questions and Answers

Why do the boiling points and melting points rise as the number of carbons increases?

Because the molecules change their shape

Because the intermolecular forces increase as the molecules get larger (correct)

Because the molecules get smaller

Because the molecules lose their intermolecular forces

What is required to occur during the processes of boiling and melting?

Lowering the temperature of the substance

Breaking the covalent bonds within a molecule

Overcoming the intermolecular forces of a liquid and a solid (correct)

Creating new molecules

What happens to the intermolecular forces as the molecules get larger?

They increase (correct)

They decrease

They become weaker

They remain constant

What is the relationship between the number of carbons and the boiling points and melting points?

<p>The boiling points and melting points rise as the number of carbons increases</p> Signup and view all the answers

What is the result of overcoming the intermolecular forces during boiling and melting?

<p>The change from one state of matter to another</p> Signup and view all the answers

Study Notes

Trends in Boiling and Melting Points

As the number of carbons in a molecule increases, its boiling point and melting point also increase.
This trend is due to the strengthening of intermolecular forces between molecules as they get larger.
Boiling and melting require overcoming these intermolecular forces in a liquid and a solid, respectively.

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Description

This quiz covers the relationship between the number of carbons in a molecule and its boiling and melting points, including the role of intermolecular forces.