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Introduction to Organic Chemistry

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Questions and Answers

What is the primary focus of organic chemistry?

The study of inorganic compounds
The study of molecular structures in plants
The study of chemical reactions in living organisms
The study of carbon compounds (correct)

What percentage of known molecules are classified as organic compounds?

20%
50%
90%
80% (correct)

What is an example of an organic molecule found in food?

Sucrose
Caffeine
Starch
All of the above (correct)

What is the purpose of using short-hand techniques in organic chemistry?

To show the locations of electrons and bonds in molecules (C) Signup and view all the answers

What is assumed to be present at the intersection of two covalent bonds in a line diagram?

A carbon atom with enough hydrogen atoms to make it tetravalent (A) Signup and view all the answers

What is the molecular formula of ethanol?

C2H6O (C) Signup and view all the answers

What is the predicted shape of a molecule with four regions of electron density around the central atom?

Tetrahedral (A) Signup and view all the answers

What is the purpose of the dot-line-wedge symbolism in depicting three-dimensional structures?

To represent bonds in different directions relative to the plane of the paper (A) Signup and view all the answers

What is the effect of lone pairs of electrons on bond angles in VSEPR theory?

They decrease the bond angles (B) Signup and view all the answers

How many types of hybridization are needed to be considered in organic molecules?

Three (B) Signup and view all the answers