Molecules for Life Week 5&6 Flashcards
(34 cards)
Alkene
C=C, ene
Alchohol
R-O-H ol
Amine
R-NH2 amine
Carboxylic acid
oic acid R-C=O-OH
Ketone
R- C=O-R one
Aromatic molecules
Rings
Aliphatic molecules
other organic molecules.S
Sideways overlap of p orbitals
Pi bond
End to end overlap for p or s orbitals
Sigma bond
Conjugated system
Alternating single and double bonds
Molecules that contain benzene rings as part of their structure
Aromatic
Electrons that move between orbitals
Delocalised.
Linear bond angles and shape
Straight line 180o
Trigonal Planar bond angle and shape
Triangular 3D shape, 120o
Tetrahedral Bond angle and shape
Tetrahedron, 109.5
What groups do the amino acid group contain
Carboxyllic acid COOH and amine NH2 groups.
Stereoisomerism
Molecules with the same molecular formula but different arrangements of atoms in space
Examples of Stereoisomers
Geometric - Cis Trans or E/Z - Optical
Structural Isomerism
Molecules with the same molecular formula but different structural formula.
What makes Straight chain isomers have a higher boiling point.
Molecules pack together more closely , so stronger intermolecular forces
How is priority determined
From the size of the atom
What is a Z isomer?
A stereoisomer that has the 2 high priority groups on the same side of the molecule.
What is an E isomer
A stereoisomer that has the 2 high priority groups on opposite sides of the molecule.
How does a cis geometric isomer determine the strength of a molecule?
It determines the polarity of a molecule, as the functional group/ atom will be on the same side of the molecule, the bond dipoles will not cancel out, leading to stronger IMFS.
