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OCR B Chemistry Alevel > Organic Reactions > Flashcards

Flashcards in Organic Reactions Deck (25)
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1

define electrophile

species which is attracted to electron-rich regions in other molecules that can accept a LP of electrons to form a covalent bond

2

define nucleophile

species with a LP of electrons it can donate to a positively charged atom to form a covalent bond

3

define substitution

One atom or group in a molecule is swapped out for another

4

give key features of addition reactions

Reactant has a double bond
100% atom economy
Single product

5

define condensation reaction

Two molecules react and bond together with the loss of a small molecule (e.g. H2O, HCl)

6

define polymer

a chain of linked repeating units

7

define monomer

single units that make up polymers

8

define elimination reaction

Atom / group in a molecule is removed from neighbouring atom forming a double bond

9

order carboxylic acid, water, phenol and alcohol in order of increasing acidity

alcohol, water, phenol, carboxylic acid

10

does carboxylic acid react with Na - what is formed

Na carboxylate + H2

11

does carboxylic acid react with NaOH - what is formed

Na carboxylate + H2O

12

does carboxylic acid react with Na2CO3 - what is formed

Na carboxylate + H2O + CO2 (effervescence)

13

does phenol react with Na - what is formed

Na phenoxide + H2

14

does phenol react with NaOH - what is formed

Na phenoxide + H2O

15

does phenol react with Na2CO3 - what is formed

Phenol DOES NOT react with Na2CO3

16

does alcohol react with Na - what is formed

sodium alcoxide + H2

17

does alcohol react with NaOH - what is formed

Alcohol DOES NOT react with NaOH

18

does alcohol react with Na2CO3 - what is formed

Alcohol DOES NOT react with Na2CO3

19

define aliphatic

containing no benzene rings

20

define aromatic

containing at least one benzene ring

21

define unsaturated

containing one or more C=C bonds

22

define saturated

containing only C-C bonds (no C=C bonds)

23

define radical

a very reactive species with an unpaired electron

24

define empirical formula

smallest whole number ratio of atoms in a molecule

25

define molecular formula

true number of atoms in a molecule