A level Chemistry for OCR preview page

A level Chemistry for OCR

The following worksheets are written for the current OCR A level Chemistry specification.

Every worksheet has a mark scheme with full workings for the calculations. This allows students to mark their own work, see how to modify their answers and also allow teachers or tutors to mark the student’s work.

These worksheets are not endorsed by OCR, nor is this website affiliated with OCR. These worksheets are written on the basis of a teacher using their professional judgement in interpreting the OCR A level chemistry specification.

Module 1 – Development of practical skills in chemistry

Recrystallisation

Testing for ions

Module 2 – Foundations in chemistry

Calculating an isotopic mass from a relative atomic mass

Shapes of molecules and ions

Intermolecular forces

Percentage yield (back calculation)

Calculating Volumes of Multiple Gaseous Products

Ideal Gas Equation

Titration calculations

Back titration calculations

Back titration calculations with steps (same file as above, but with steps)

Titration Calculations Percentage Composition by Mass

Reactions of acids and alkalis

Writing ionic equations

Naming compounds using oxidation numbers

Hydrated Salts and Water of Crystallisation

Hydrated Salt formula conversions

Module 3 – Periodic table and energy

Group 2

Using Hess law to calculate an unknown enthalpy of formation from the overall reaction enthalpy.

Bond enthalpy calculations

Kinetics AS

Module 4 – Core organic chemistry

Skeletal formulae for alkanes

Free Radical substitution

Haloalkanes

Naming & drawing alkenes

EZ isomerism

Reactions of alkenes

Naming alcohols

Oxidation of alcohols

Mass Spectrometry

Module 5 – Physical chemistry and transition elements

Redox titrations percentage composition

Balancing equations by oxidation number

Kp calculations

Enthalpy Definitions and Equations

Born haber cycles

Born haber calculations

Enthalpy Cycles for Ionic Solutions

Minimum temperature calculations

Deducing orders from initial rates

Deducing orders from initial rates (harder)

Rate determining Step

Activation energy from graphs

Conjugate acid base

Weak Acids - Ka and pKa

Weak Acids – Ka, pH and Percentage Dissociation

Buffer calculations

Module 6 – Organic chemistry and analysis

Working out molecular formulae from organic structures

Electrophilic Substitution in Aromatic Compounds

Ester formation

Making esters using acid anhydrides

Polyesters

Identification of chiral centres

Proton NMR Practice

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