Help
Options
Didn't know it?
click below
click below
Knew it?
click below
click below
Don't Know
Remaining cards (0)
Know
retry
shuffle
restart
0:00
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.
Normal Size Small Size show me how
Normal Size Small Size show me how
Unit 4 Chem
Organic Chemistry Definitions
| Question | Answer |
|---|---|
| Curly arrow | movement of an electron pair to form/break a new covalent bond |
| electronegativity | measure of attraction of a bonded atom for the pair of electrons in a covalent bond. |
| zwitterion | dipolar ionic form of an amino acid formed by the donation of a hydrogen ion from the carboxyl group to the amino group. No overall charge |
| Isoelectric point | pH value where the amino acids exists as a zwitterion |
| Condensation polymerisation | monomers bond to form the polymer chain and water is eliminated from this reaction |
| Condensation | two small molecules react together to form a larger molecule with the elimination of a small molecule e.g. water |
| biodegradable | polymer that breaks down completely into carbon dioxide and water. |
| degradable | polymer that breaks down into smaller fragments when exposed to heat or light. |
| phase | physically distinct form of a a substance |
| mobile phase | the phase that moves in chromotography |
| stationary phase | the phase that does not move in chromotography |
| chromatography | technique used for separating components in a mixture |
| Adsorption | process by which a solid holds molecules of a gas or liquid as a thin film on the surface of a solid |
| chromatogram | visible record showing the results of separation by chromotography |
| Retention time | time taken in gas chromatography for a component to pass from the column inlet to the detector. |
| enantiomers | optical isomer |
| achiral | not an optical isomer |
| racemic mixture | contains equal amounts of both optical isomers (racemates) does not rotate light |
| stereospecific | one isomer interacts with the enzymes |
| chirality | 4 different groups, do not superimpose |
| chiral synthesis | enzyme produces one isomer |
| chiral pool sythesis | start with one stereospecific isomer resulting in pure optical drug |
| transition metal complexes | catalyses produce, one isomer |
| synthetic | both isomers, need a stronger dose, cheaper, side effects |
| Problems with synthetic | isomers difficult to separate due to the same chemical and physical properties |
| natural | one isomer, need a weaker dose, expensive, no side effects, |
| Problems with natural | enzymes are costly and time consuming |
Created by:
07blandforderin
Popular Chemistry sets