Chemistry Flashcards

  • Created by: Sara
  • Created on: 21-03-13 19:42
Delocalised Electrons
Shared between more than two atoms
1 of 35
Addition Reaction
A reaction in which a reactant is added to an unsaturated molecule to make a saturated molecule
2 of 35
Substitution Reaction
A reaction in which an atom or group of atoms is replaced with a different atom or group of atoms
3 of 35
Electrophile
An atom, or group of atoms, that is attracted to an electron-rich centre, where it accepts a pair of electrons to form a new covalent bond
4 of 35
Electrophilic Substitution
A type of substitution reaction in which an electrophile is attracted to an electron-rich centre or atom, where it accepts a pair of electrons to form a new covalent bond
5 of 35
Reaction Mechanism
A series of steps that, together, make up the overall reaction
6 of 35
Curly Arrow
Shows the movement of an electron pair in the breaking or formation of bonds
7 of 35
Functional Group
The part of an organic molecule responsible for its chemical reactions
8 of 35
Electronegativity
A measure of the attraction of a bonded atom for the pair of electrons in a covalent bond
9 of 35
Redox Reaction
A reaction in which both reduction and oxidation takes place
10 of 35
Reflux
The continual boiling and condensing of a reaction mixture to ensure that the reaction takes place without the contents of the flask boiling dry
11 of 35
Nucleophile
An atom or group of atoms attracted to an electron deficient centre, where it donates a pair of electrons to form a new covalent bond
12 of 35
Esterification
The reaction of an alcohol with a carboxylic acid to produce an ester and water
13 of 35
Hydrolysis
A reaction with water or hydroxide ions that breaks a chemical compound into two compounds
14 of 35
Low-density Lipoprotein (LDL)
Responsible for carrying cholesterol and triglycerides from the liver to the tissues
15 of 35
High-density Lipoprotein (HDL)
Removes cholesterol from the arteries and transports it back to the liver for excretion or re-utilisation
16 of 35
Peptide
A compound made of amino acids linked by peptide bonds
17 of 35
Zwitterion
A dipolar ionic form of an amino acid that is formed by the donation of a hydrogen ion from the carboxyl group to the amino group
18 of 35
Isoelectric Point
The pH value at which the amino acid exists as a Zwitterion
19 of 35
Stereoisomers
Species with the same structural formula but with a different arrangement of atoms in the space
20 of 35
Chiral Carbon
A carbon atom attached to four different atoms or groups of atoms
21 of 35
Optical Isomers
Stereoisomers that are non-superimposible images of eachother
22 of 35
Condensation Reaction
A reaction in which two small molecules react together to form a larger molecule, with the elimination of a small molecule, such as water
23 of 35
Repeat Unit
The specific arrangement of atoms that occurs in the structure over and over again. Repeat units are included in brackets, with n on the outside
24 of 35
Biodegradable Polymer
A polymer that breaks down completely into carbon dioxide and water
25 of 35
Degradable Polymer
A polymer that breaks down into smaller fragments when exposed to heat, light or moisture
26 of 35
Pharmacological Activity
The beneficial or adverse effects of a drug on living matter
27 of 35
Phase
A physically distinctive form of a substance, e.g. solid, liquid and gaseous states of ordinary matter
28 of 35
Mobile Phase
The phase that moves in chromatography
29 of 35
Stationary phase
The phase that does not move in chromatography
30 of 35
Adsorption
The process by which a solid holds molecules of a gas or liquid or solute as a thin film on the surface of a solid (or liquid)
31 of 35
Chromatogram
A visible record showing the result of seperation of the components of a mixture by chromatography
32 of 35
Rf
distance moved by component/distance moved by solvent front
33 of 35
Retention Time (in gas chromatography)
The time for a component to pass from the column inlet to the detector
34 of 35
Chemical Shift
A scale that compares the frequency of an NMR absorption with the frequency of the reference peak TMS=0
35 of 35

Other cards in this set

Card 2

Front

A reaction in which a reactant is added to an unsaturated molecule to make a saturated molecule

Back

Addition Reaction

Card 3

Front

A reaction in which an atom or group of atoms is replaced with a different atom or group of atoms

Back

Preview of the back of card 3

Card 4

Front

An atom, or group of atoms, that is attracted to an electron-rich centre, where it accepts a pair of electrons to form a new covalent bond

Back

Preview of the back of card 4

Card 5

Front

A type of substitution reaction in which an electrophile is attracted to an electron-rich centre or atom, where it accepts a pair of electrons to form a new covalent bond

Back

Preview of the back of card 5
View more cards

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »