Introduction to organic chemistry Flashcards
Organic compounds are made up of _________ and only a few other elements.
CHOICES:
Attractive forces, Vitalism, carbon, Repulsive forces, Gilbert Lewis, Friedrich Wöhler, Functional group, Constitutional isomers
carbon
sulfur, phosphorus, and a halogen are present in some organic compounds. True or False
True
approximately 95% of all known compounds are organic. True or False
False - 85%
A belief that organic compounds can only be made with the aid of the mysterious vital force present only in living organic compounds.
CHOICES:
Attractive forces, Vitalism, carbon, Repulsive forces, Gilbert Lewis, Friedrich Wöhler, Functional group, Constitutional isomers
Vitalism
The German chemist that debunked vitalism and demonstrated the conversion of ammonium cyanate (a known inorganic salt) into urea.
CHOICES:
Attractive forces, Vitalism, carbon, Repulsive forces, Gilbert Lewis, Friedrich Wöhler, Functional group, Constitutional isomers
Friedrich Wöhler
inorganic compounds are just simply defined as compounds containing carbon atoms, while organic compounds are those compounds lacking carbon. True or False
False - organic compounds are just simply defined as compounds containing carbon atoms, while inorganic compounds are those compounds lacking carbon.
The compound formula is adequate to define because compounds differ in how atoms are bonded together. True or False
False - not adequate
compounds with the same molecular formula but different structures.
CHOICES:
Attractive forces, Vitalism, carbon, Repulsive forces, Gilbert Lewis, Friedrich Wöhler, Functional group, Constitutional isomers
Constitutional isomers
Carbon is a tetravalent element. True or False
True
Hydrogen and halogens is a monovalent element. True or False
True
Nitrogen and Oxygen are both trivalent elements. True or False
False - oxygen is a divalent element
Dimethyl ether and ethanol are samples of constitutional isomers. True or False
True
an atom or group of atoms within a molecule that shows a characteristic set of predictable physical and chemical properties.
CHOICES:
Attractive forces, Vitalism, carbon, Repulsive forces, Gilbert Lewis, Friedrich Wöhler, Functional group, Constitutional isomers
Functional group
Functional groups undergo the same types of chemical reactions no matter in what organic molecule they are found. True or False
True
Functional groups provide the basis on which
we derive names for organic compounds. True or False
True
Contain an -OH (hydroxyl) group bonded to a tetrahedral carbon atom.
CHOICES:
Alcohol, Amine, Formaldehyde, Ketone, Amide, Carboxylic ester, Carboxylic acid, Aldehyde, Tertiary
Alcohol
Ethanol and Methanol is alcohol. True or False
True
Primary alcohol contains 1 carbon group/2 hydrogen attached to COH. True or False
True
has 3 carbon groups/ 0 hydrogen attached to COH
CHOICES:
Alcohol, Amine, Formaldehyde, Ketone, Amide, Carboxylic ester, Carboxylic acid, Aldehyde, Tertiary
Tertiary
Secondary alcohols has 2 carbon groups/ 1 hydrogen attached to COH. True or False
True
a compound containing an amino group (-NH2, RNH2, R2NH, R3N).
CHOICES:
Alcohol, Amine, Formaldehyde, Ketone, Amide, Carboxylic ester, Carboxylic acid, Aldehyde, Tertiary
Amine
Secondary amine has a 2 Hydrogen attached to the nitrogen. True or False
False - Primary
Tertiary amine has 0 Hydrogen attached to the nitrogen. True or False
True
contains a carbonyl group (C=O) bonded to hydrogen.
CHOICES:
Alcohol, Amine, Formaldehyde, Ketone, Amide, Carboxylic ester, Carboxylic acid, Aldehyde, Tertiary
Aldehyde
The simplest aldehyde; the carbonyl group is bonded to two hydrogens.
CHOICES:
Alcohol, Amine, Formaldehyde, Ketone, Amide, Carboxylic ester, Carboxylic acid, Aldehyde, Tertiary
Formaldehyde
contains a carbonyl group (C=O) bonded to two carbon atoms.
CHOICES:
Alcohol, Amine, Formaldehyde, Ketone, Amide, Carboxylic ester, Carboxylic acid, Aldehyde, Tertiary
Ketone
a compound containing a -COOH (carboxyl: carbonyl + hydroxyl) group.
CHOICES:
Alcohol, Amine, Formaldehyde, Ketone, Amide, Carboxylic ester, Carboxylic acid, Aldehyde, Tertiary
Carboxylic acid
derivative of a carboxylic acid in which the H of the carboxyl group is replaced by a carbon group.
CHOICES:
Alcohol, Amine, Formaldehyde, Ketone, Amide, Carboxylic ester, Carboxylic acid, Aldehyde, Tertiary
Carboxylic ester
derivative of a carboxylic acid in which the -OH of the carboxyl group is replaced by an amino group.
CHOICES:
Alcohol, Amine, Formaldehyde, Ketone, Amide, Carboxylic ester, Carboxylic acid, Aldehyde, Tertiary
Amide
He defined a covalent bond as a result of two atoms sharing a pair of electrons
CHOICES:
Attractive forces, Vitalism, carbon, Repulsive forces, Gilbert Lewis, Friedrich Wöhler, Functional group, Constitutional isomers
Gilbert Lewis
between positively charged nuclei and negatively charged electrons
CHOICES:
Attractive forces, Vitalism, carbon, Repulsive forces, Gilbert Lewis, Friedrich Wöhler, Functional group, Constitutional isomers
Attractive forces
between two positively charged nuclei
CHOICES:
Attractive forces, Vitalism, carbon, Repulsive forces, Gilbert Lewis, Friedrich Wöhler, Functional group, Constitutional isomers
Repulsive forces
between two negatively charged electrons
CHOICES:
Attractive forces, Vitalism, carbon, Repulsive forces, Gilbert Lewis, Friedrich Wöhler, Functional group, Constitutional isomers
Repulsive forces
electrons in the outermost shell.
CHOICES:
Nonpolar covalent bond, Polar covalent bond, Quantum Mechanics, Ionic bond, Electronegativity, Valence electrons
Valence electrons
We can calculate the number of valence electrons by analyzing the electronic configuration. True or False
True
how strongly an atom attracts shared electrons.
CHOICES:
Nonpolar covalent bond, Polar covalent bond, Quantum Mechanics, Ionic bond, Electronegativity, Valence electrons
Electronegativity
electrons shared between two atoms, where electronegativity difference is less than 0.5.
CHOICES:
Nonpolar covalent bond, Polar covalent bond, Quantum Mechanics, Ionic bond, Electronegativity, Valence electrons
Nonpolar covalent bond
electrons shared between two atoms with electronegativity difference between 0.5 and 1.7.
CHOICES:
Nonpolar covalent bond, Polar covalent bond, Quantum Mechanics, Ionic bond, Electronegativity, Valence electrons
Polar covalent bond
the electrons are transferred producing ions; the two atoms have an electronegativity difference of more than 1.7, and so the more electronegative atom owns the electrons.
CHOICES:
Nonpolar covalent bond, Polar covalent bond, Quantum Mechanics, Ionic bond, Electronegativity, Valence electrons
Ionic bond
established as a theory to explain the wave properties of electrons
CHOICES:
Nonpolar covalent bond, Polar covalent bond, Quantum Mechanics, Ionic bond, Electronegativity, Valence electrons
Quantum Mechanics
The solution to wave equations are wave functions. The 3D plot of a (Ψ2) gives an image of an atomic orbital. True or False
True
The placement of electrons is governed by the following: Aufbau principle, Pauli exclusion principle, and Hund’s Rule. True or False
True
the overlapping of atomic orbital space between two or more atoms.
CHOICES:
Sigma (s) bond, Hybridization, pi bond, Antibonding molecular orbital, Molecular orbital
Sigma (s) bond
overlapping atomic orbital wavefunctions that extend over the entire molecule
CHOICES:
Sigma (s) bond, Hybridization, pi bond, Antibonding molecular orbital, Molecular orbital, Valence shell electron pair repulsion (VSEPR) theory
Molecular orbital
consists of destructive interference where no bonds are formed.
CHOICES:
Sigma (s) bond, Hybridization, pi bond, Antibonding molecular orbital, Molecular orbital, Valence shell electron pair repulsion (VSEPR) theory
Antibonding molecular orbital
Antibonding molecular
bonds have lower energy
because it has one node. True or False
False - higher energy
explains how carbon forms four bonds with equal atomic orbitals (tetravalent).
CHOICES:
Sigma (s) bond, Hybridization, pi bond, Antibonding molecular orbital, Molecular orbital, Valence shell electron pair repulsion (VSEPR) theory
Hybridization
The ground-state electron configuration for carbon explains how carbon makes four bonds. True or False
False - it cannot explain
considering the excited state, it still doesn’t explain how carbon makes 4 equivalent bonds, like the 4 to H in a methane molecule. True or False
True
The p orbitals overlap to form a ___________. Pi bonds are weaker than sigma bonds.
CHOICES:
Sigma (s) bond, Hybridization, pi bond, Antibonding molecular orbital, Molecular orbital, Valence shell electron pair repulsion (VSEPR) theory
pi bond
Carbon naturally forms four bonds through hybridization which results to tetrahedral molecular geometry. True or False
True
If C has 4 single bonds: sp4 hybridized. True or False
False - sp3
If C has 1 double bond and
2 single bonds: sp2 hybridized. True or False
True
If C has 1 triple bond and 1
single bond: no sp is hybridized. True or False
False - only sp is hybridized
stronger than pi bond as it requires almost twice the bind energy of a pi bond to break it.
CHOICES:
Sigma (s) bond, Hybridization, pi bond, Antibonding molecular orbital, Molecular orbital, Valence shell electron pair repulsion (VSEPR) theory
Sigma bond
Bond strength and bond length are inversely proportional. True or False
True
More bonds =longer bond length. Hence, sp3>sp2>sp. True or False
False - shorter bond strength
More bonds = higher bond strength. Hence, sp3
True
valence electrons (shared and lone pairs) repel each other
CHOICES:
Sigma (s) bond, Hybridization, pi bond, Antibonding molecular orbital, Molecular orbital, Valence shell electron pair repulsion (VSEPR) theory
Valence shell electron pair repulsion (VSEPR) theory
To identify its molecular geometry, determine its steric number. True or False
True
For any sp3 hybridized atom, the 4 valence electron pairs will form a tetrahedral molecular geometry
with a 119.5° bond angle. True or False
False - 109.5°
For any sp2 hybridized atom, the electron pairs will form a trigonal planar molecular geometry with a 140° bond angle. True or False
False - 120°
For any sp hybridized atom, the electron pairs will form a linear molecular geometry with a 180° bond angle. True or False
True
Electronegativity differences result in ___________
CHOICES:
polar bonds, Dipole moment, Dipole-dipole forces, Hydrogen bonds, Polar compounds, London dispersion forces, Aprotic solvents, Protic solvents, Neutral molecules, Electrostatic potential maps, Induction
polar bonds
___________ is the shifting electrons within an orbital results in a dipole moment.
CHOICES:
polar bonds, Dipole moment, Dipole-dipole forces, Hydrogen bonds, Polar compounds, London dispersion forces, Aprotic solvents, Protic solvents, Neutral molecules, Electrostatic potential maps, Induction
Induction
(the amount of partial charge) x (the distance the 8+ and 8- are separated)
CHOICES:
polar bonds, Dipole moment, Dipole-dipole forces, Hydrogen bonds, Polar compounds, London dispersion forces, Aprotic solvents, Protic solvents, Neutral molecules, Electrostatic potential maps, Induction
Dipole moment
For molecules with multiple polar bonds, the dipole moment is the vector sum of all the individual bond dipoles. True or False
True
often used to give a visual depiction of polarity
CHOICES:
polar bonds, Dipole moment, Dipole-dipole forces, Hydrogen bonds, Polar compounds, London dispersion forces, Aprotic solvents, Protic solvents, Neutral molecules, Electrostatic potential maps, Induction
Electrostatic potential maps
____________ are attracted to one another through Dipole-dipole interactions, Hydrogen bonding, Dispersion forces
CHOICES:
polar bonds, Dipole moment, Dipole-dipole forces, Hydrogen bonds, Polar compounds, London dispersion forces, Aprotic solvents, Protic solvents, Neutral molecules, Electrostatic potential maps, Induction
Neutral molecules
polar molecules line up their opposite charges.
CHOICES:
polar bonds, Dipole moment, Dipole-dipole forces, Hydrogen bonds, Polar compounds, London dispersion forces, Aprotic solvents, Protic solvents, Neutral molecules, Electrostatic potential maps, Induction
Dipole-dipole forces
essentially strong type of dipole-dipole attraction because the partial + and – charges are relatively large.
CHOICES:
polar bonds, Dipole moment, Dipole-dipole forces, Hydrogen bonds, Polar compounds, London dispersion forces, Aprotic solvents, Protic solvents, Neutral molecules, Electrostatic potential maps, Induction
Hydrogen bonds
solvents that engage in H-bonding.
CHOICES:
polar bonds, Dipole moment, Dipole-dipole forces, Hydrogen bonds, Polar compounds, London dispersion forces, Aprotic solvents, Protic solvents, Neutral molecules, Electrostatic potential maps, Induction
Protic solvents
solvents that do not form H-bonds.
CHOICES:
polar bonds, Dipole moment, Dipole-dipole forces, Hydrogen bonds, Polar compounds, London dispersion forces, Aprotic solvents, Protic solvents, Neutral molecules, Electrostatic potential maps, Induction
Aprotic solvents
Increasing the amount and extent of hydrogen bonding explains why the following isomers have different boiling points. True or False
True
H-bonds are among the forces that cause DNA to form a double helix and some proteins to fold into an alpha-helix. True or False
True
weakest IMF present between all molecules (polar or nonpolar).
CHOICES:
polar bonds, Dipole moment, Dipole-dipole forces, Hydrogen bonds, Polar compounds, London dispersion forces, Aprotic solvents, Protic solvents, Neutral molecules, Electrostatic potential maps, Induction
London dispersion forces
London dispersion forces are the reason why molecules with more mass generally have lower boiling points. True or False
False - higher
The more branching in a molecule, the lower its surface area, and the weaker the London dispersion forces. True or False
True
generally, it mixes well with
other polar compounds
CHOICES:
polar bonds, Dipole moment, Dipole-dipole forces, Hydrogen bonds, Polar compounds, London dispersion forces, Aprotic solvents, Protic solvents, Neutral molecules, Electrostatic potential maps, Induction
Polar compounds
the principle of solubility is like-dissolves-like. True or False
True