Chem - IUPAC rules Flashcards
(18 cards)
How are molecules named?
Following the IUPAC rules
What are the rules for naming compounds known as?
Nomenclature
What is the name stem?
How is it decided?
The first part of the name
It is decided by the number of carbon atoms
Stem
What is the name used for 1 carbon?
Meth-
Stem
What is the name used for 2 carbons?
Eth-
Stem
What is the name used for 3 carbons?
Prop-
Stem
What is the name used for 4 carbons?
But-
Stem
What is the name used for 5 carbons?
Pent-
What is the name ending come from?
The functional group
Name ending
What does carboxylic acid become?
Propan oic acid
Name ending
What does alcohol become?
Ethan ol
Name ending
What does ketone become?
Propan one
Name ending
What does aldehyde become?
Ethan al
What are complex molecules?
Molecules that have multiple functional groups or side chains
Naming conventions
What is the molecule always named after?
The longest possible carbon chain that includes the functional group
Naming conventions
Why are carbons numbered?
To give the functional group the lowest number possible
Naming conventions
What are side chains written as?
Prefixes to the name
What do you add to the name of the molecule contains rings?
Add ‘cyclo-‘ at the start of the name
E.g.
Cyclo hexane
Cyclo hexanol
Cyclo hexanone
