OCR A A2 Chemistry Module 1 Unit 1 Definitions

Definitions from the Key Definition boxes of the OCR A A2 Chemistry textbook.

I apologise in advance for any typos!

Hope the document is useful and will save you time typing them out for yourself.

I will add Module 2 and 3 also - check my other resources

HideShow resource information
  • Created by: Erin
  • Created on: 16-01-15 18:26
Preview of OCR A A2 Chemistry Module 1 Unit 1 Definitions

First 390 words of the document:

Unit 1 Rings, polymers and analysis
Module 1 Rings, acids and amines
Aromatic ­ any compound with the benzene ring
Delocalised electrons ­ are shared between more than two atoms
Addition reaction ­ one in which a reactant is added to an unsaturated molecule to make a saturated
molecule
Substitution reaction ­ one in which an atom or group of atoms is replaced with a different atom or groups of
atoms
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
Substitution reaction ­ an atom or group of atoms is replaced with a different atom or group of atoms
Electrophilic substitution ­ 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
Reaction mechanism ­ series of steps that, together, make up the overall reaction
Curly arrow ­ symbol used in reaction mechanisms to show the movement of an electron pair in the breaking
or formation of covalent bonds
Functional group ­ part of an organic molecule responsible for its chemical reactions
Electronegativity ­ a measure of the attraction of a bonded atom for the pair of electrons in a covalent bond
Stem ­ the longest carbon chain present in an organic molecule
Suffix ­ part of the name asses after the stem
Redox reaction ­ one in which both reduction and oxidation takes place
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
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
Curly arrow ­ a symbol used in reaction mechanisms to show the movement of an electron pair in the
breaking and formation of a covalent bond
Esterification ­ the reaction of an alcohol with a carboxylic acid to produce an ester and water
Hydrolysis ­ reaction with water or hydroxide ions that breaks a chemical compound into two compounds
Low-density lipoprotein (LDL) ­ responsible for carrying cholesterol and triglycerides from the liver to the
tissues

Other pages in this set

Page 2

Preview of page 2

Here's a taster:

High-density lipoprotein (HDL) ­ can remove cholesterol from the arteries and transport it back to the liver
for excretion or re-utilisation…read more

Comments

No comments have yet been made

Similar Chemistry resources:

See all Chemistry resources »See all resources »