Skeletal formula

Last updated: 08/02/2020

OCR-A A-Level Chemistry Basic concepts and hydrocarbons Skeletal formula

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Module 2 - Foundations in chemistry

Atoms and reactions

4 Quizzes

Structure of an atom

Isotopes

Relative molecular mass

Mass spectrometry

Compounds, formulae and equations

13 Quizzes

Formulae of compounds and ions

Balanced equations

Ionic equations

Moles and the Avogadro constant

Empirical and molecular formula

Volume of gases

Ideal gas equation

Concentrations and volumes of solutions

Percentage yields

Atom economy

PAG 1.1 – Determination of the composition of copper(II) carbonate basic

PAG 1.2 – Determination of the relative atomic mass of magnesium

PAG 1.3 – Determination of the formula for magnesium oxide

Acids

5 Quizzes

Salt equations

PAG 2.1 – Determination of the concentration of hydrochloric acid

PAG 2.2 – Determination of the molar mass of an acid

PAG 2.3 – Identification of an unknown carbonate

Water of crystallization

2 Quizzes

1 Quiz

Electronic configuration

Bonding and structure

8 Quizzes

Ionic bonding

Covalent and dative covalent bonds

Bonding and properties

Shapes of molecules

Bond polarity

Van der Waals’ forces

Permanent Dipole-Dipole Interactions

Hydrogen bonds

Module 3 - Periodic table and energy

Periodicity

2 Quizzes

s, p, d or f block elements

Period 2 and 3

Group 2

1 Quiz

Group 2, the alkaline earth metals

The halogens

2 Quizzes

Group 7 (17) the halogens

Chlorine and chlorate

Qualitative analysis

3 Quizzes

PAG 4.1 – Identifying unknowns 1

PAG 4.2 – Identifying unknowns 2

PAG 4.3 – Identifying unknowns 3

Physical chemistry

7 Quizzes

Enthalpy change

Calorimetry

PAG 3.1 – Determination of the enthalpy change of neutralisation

PAG 3.2 – Determination of an enthalpy change of reaction by Hess’ Law

PAG 3.3 – Determination of enthalpy changes of combustion

6 Quizzes

Effect of catalysts on reaction rate

Effect of pressure and concentration on reaction rate

Effect of temperature on reaction rate

Heterogeneous catalysts and homogeneous catalysts

Maxwell–Boltzmann distribution

Chemical equilibrium

2 Quizzes

Le Chatelier’s principle and dynamic equilibrium

Module 4 - Core organic chemistry

Basic concepts and hydrocarbons

5 Quizzes

Introduction to organic chemistry

3 Quizzes

Combustion of alkanes

Halogenation of alkanes

Alkenes

7 Quizzes

Bonding and reactivity

Stereoisomerism

E/Z isomerism

Cahn–Ingold–Prelog priority rules

Addition reactions of alkenes

3 Quizzes

Oxidation of alcohols

Reactions with alcohols

Haloalkanes

3 Quizzes

Nucleophilic substitution

Elimination reactions

Depletion of ozone

Organic synthesis

7 Quizzes

Experimental tehniques

PAG 5.1 – Synthesis of a haloalkane

PAG 5.2 – Preparation of cyclohexene

PAG 5.3 – Oxidation of ethanol

PAG 6.1 – Synthesis of aspirin

PAG 6.2 – Preparation of benzoic acid

PAG 6.3 – Preparation of methyl 3-nitrobenzoate

Analytical techniques

2 Quizzes

Infrared spectroscopy

Time of flight mass spectrometer

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