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Questions and Answers
What is the defining feature of organic molecules?
What is the defining feature of organic molecules?
Which type of bond connects carbon and hydrogen atoms in alkanes?
Which type of bond connects carbon and hydrogen atoms in alkanes?
Which alkane comes after propane in the naming sequence?
Which alkane comes after propane in the naming sequence?
What is the name of a 6-carbon alkane?
What is the name of a 6-carbon alkane?
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If a double bond is added to an alkane, what type of molecule does it become?
If a double bond is added to an alkane, what type of molecule does it become?
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What is the simplest alkane with only 1 carbon atom bonded to 4 hydrogens?
What is the simplest alkane with only 1 carbon atom bonded to 4 hydrogens?
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What is the first step in the process of naming organic molecules?
What is the first step in the process of naming organic molecules?
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What suffix replaces '-ane' in organic molecules with double bonds?
What suffix replaces '-ane' in organic molecules with double bonds?
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Why is it important to number the carbons in organic molecules when naming them?
Why is it important to number the carbons in organic molecules when naming them?
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What does 'lowest numbered carbon' refer to in organic molecule naming?
What does 'lowest numbered carbon' refer to in organic molecule naming?
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If a 5-carbon chain contains a carboxylic acid, what suffix does the alkane name change to?
If a 5-carbon chain contains a carboxylic acid, what suffix does the alkane name change to?
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What are alkyl functional groups made of?
What are alkyl functional groups made of?
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Study Notes
Organic Molecules
- Organic molecules are based on a carbon backbone.
- The most basic organic molecules are alkanes, composed of a straight chain of hydrogen and carbon atoms covalently linked by single bonds.
Alkanes
- The first 4 alkanes have unique names: methane, ethane, propane, and butane.
- The names of subsequent alkanes follow a common pattern, with a suffix indicating the number of carbon atoms: pentane (5 carbon), hexane (6 carbon), heptane (7 carbon), and so on.
Alkenes and Alkynes
- Alkenes and alkynes are formed by adding a double or triple bond to an alkane, respectively.
- The suffix "-ane" changes to "-ene" or "-yne" to indicate the type of bond.
Naming Organic Molecules
- The basic steps of naming organic molecules are: 1) identify the parent chain, 2) identify the substituents/functional groups, and 3) numbering of carbon atoms.
- The parent chain is the longest chain of carbon atoms.
- To identify the parent chain, start at one free end and try to include as many carbons as possible.
- Substituents/functional groups are identified from the longest carbon chain, with some having priority in their naming.
- The most common substituents are alkyl function groups, which have prefixes similar to their alkane counterparts but with a suffix of "-yl".
- Carbon chain numbering is done to ensure the first substituent on the chain comes on the lowest possible numbered carbon.
Correct Numbering
- The correct numbering of the carbon chain ensures the first substituent comes on a lower numbered carbon.
- This is important for correctly naming the molecule.
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Description
Learn the basics of naming organic molecules, starting with a definition of what organic molecules are and focusing on alkanes. Understand the carbon backbone structure and common bonding patterns in organic chemistry.