OCR GCSE (9-1) Chemistry A – Gateway Science (J248)
C1 Particles

Introduction to Atoms | Curriculum Bites
Introduction to Atoms | Curriculum Bites
Spec references J248: C1.1a J250: C1.1a. This video provides an introduction to the concept that all materials are composed of atoms...

History of the Atom: From Rutherford to Bohr | Chemistry: A Volatile History
History of the Atom: From Rutherford to Bohr | Chemistry: A Volatile History
Spec references J248: C1.2a J250: C1.2a. Professor Jim Al-Khalili explains the history of the at...

How Rutherford Discovered the Nucleus | Atom
How Rutherford Discovered the Nucleus | Atom
Spec references J248: C1.2a J250: C1.2a. Detailed desciption of how Rutherford's alpha particle scattering experiment was develo...

Atomic Structure - Building an Atom | Curriculum Bites
Atomic Structure - Building an Atom | Curriculum Bites
Spec references J248: C1.2b, C1.2d, C1.2e J250: C1.2b, C1.2d, C1.2e. How can an atom be completely described by the in...

Discovery of the Neutron | Atom
Discovery of the Neutron | Atom
Spec references J248: C1.2d, C1.2e J250: C1.2d, C1.2e. Professor Jim Al-Khalili explains how James Chadwick discovered the neutron. This solv...

Atomic Structure - Revision | GCSE Bitesize Revision
Atomic Structure - Revision | GCSE Bitesize Revision
Spec references J248: C1.2b, C1.2d, C1.2e J250: C1.2b, C1.2d, C1.2e. A fast-paced overview of the basics of atomic struc...

C2 Elements, compounds and mixtures

Chemical calculations | GCSE Bitesize Revision
Chemical calculations | GCSE Bitesize Revision
This video provides an overview of how the masses of subatomic particles are used to calculate atomic masses. It then explains...

Introduction to Electronic Structure and Chemical Properties | Atom
Introduction to Electronic Structure and Chemical Properties | Atom
Spec references J248: C2.2h J250: C2.2h. Professor Jim Al-Khalili explains how chemical properties are de...

Arrangement of the Periodic Table | Curriculum Bites
Arrangement of the Periodic Table | Curriculum Bites
Spec references J248: C2.2a, C2.2b, C2.2c J250: C2.2a, C2.2b, C2.2c. This video explains the arrangement of the periodic...

Types of Compounds | Curriculum Bites
Types of Compounds | Curriculum Bites
Spec references J248: C2.2h J250: C2.2h. An introduction to how elements react to form ionic and covalent compounds, with reference to ...

Mendelleev's Periodic Table | Chemistry: A Volatile History
Mendelleev's Periodic Table | Chemistry: A Volatile History
Spec references J248: C2.2i J250: C2.2i. An account of how Mendeleev arranged the elements by atomic mass to crea...

Periodic Table Overview | Chemistry: A Volatile History
Periodic Table Overview | Chemistry: A Volatile History
Spec references J248: C2.2i J250: C2.2i. A quick recap of how the periodic table is arranged including groups, period...

Ion formation and Ionic Bonding Revision | GCSE Bitesize Revision
Ion formation and Ionic Bonding Revision | GCSE Bitesize Revision
Spec references J248: C2.2di, C2.2e, C2.2f J250: C2.2di, C2.2e, C2.2f. Ideal for topic revision, this video...

C3 Chemical reactions

Electrolysis - Discovery of Potassium | Curriculum Bites
Electrolysis - Discovery of Potassium | Curriculum Bites
Spec references J248: C3.4b J250: C3.4b. Professor Jim Al-Khalili recreates the electrolysis experiment that lead to...

Electrolysis | GCSE Bitesize Revision
Electrolysis | GCSE Bitesize Revision
Spec references J248: C3.4a, C3.4b, C3.4c, C3.4d, C3.4e J250: C3.4a, C3.4b, C3.4c, C3.4d, C3.4e. Explanation of how ionic substances ca...

Chemical calculations | GCSE Bitesize Revision
Chemical calculations | GCSE Bitesize Revision
This video provides an overview of how the masses of subatomic particles are used to calculate atomic masses. It then explains...

Acids, Bases and Salts | GCSE Bitesize Revision
Acids, Bases and Salts | GCSE Bitesize Revision
Spec references J248: C3.3d, C3.3e, C3.3f, C3.3h, C4.2a J250: C3.3d, C3.3e, C3.3f, C3.3h, C3.1g. This video introduces acids ...

C4 Predicting and identifying reactions and products

Properties of Group 1 Metals | Chemistry: A Volatile History
Properties of Group 1 Metals | Chemistry: A Volatile History
Spec references J248: C4.1a. Demonstration of reactions of lithium, sodium and potassium with water (Contains hi...

Properties of Potassium | Chemistry: A Volatile History
Properties of Potassium | Chemistry: A Volatile History
Spec references J248: C4.1a J250: C4.1a. Professor Jim Al-Khalili describes properties of potassium and some of its u...

Reactivity of Group 0, 1 and 7 | Curriculum Bites
Reactivity of Group 0, 1 and 7 | Curriculum Bites
Spec references J248: C4.1a. C4.1b J250: C4.1a. C4.1b. A detailed explanation of the reactivity of Group 0, Group 1, and Gr...

The Thermite Reaction | Short Circuit
The Thermite Reaction | Short Circuit
Spec references J248: C4.1f J250: C4.1e. A demonstration of the thermite displacement reaction is provided, including the reaction's hi...

C5 Monitoring and controlling chemical reactions

Measuring the Rate of Reaction | GCSE Bitesize Revision
Measuring the Rate of Reaction | GCSE Bitesize Revision
Spec references J248: C5.2a, C5.2c, C5.2d, C5.2e, C5.2f J250: C5.2a, C5.2c, C5.2d, C5.2e, C5.2f. This video provides ...

Rates of reaction | Curriculum Bites
Rates of reaction | Curriculum Bites
Spec references J248: C5.2c, C5.2d, C5.2e, C5.2f J250: C5.2c, C5.2d, C5.2e, C5.2f. Introduction to rate of chemical reactions and collis...

Reversible Reactions | GCSE Bitesize Revision
Reversible Reactions | GCSE Bitesize Revision
This video provides examples of reversible chemical reactions and visually explains how dynamic equilibrium is achieved. It int...


Measuring the Rate of Reaction | GCSE Bitesize Revision
Measuring the Rate of Reaction | GCSE Bitesize Revision
Spec references J248: C5.2a, C5.2c, C5.2d, C5.2e, C5.2f J250: C5.2a, C5.2c, C5.2d, C5.2e, C5.2f. This video provides ...

Rates of reaction | Curriculum Bites
Rates of reaction | Curriculum Bites
Spec references J248: C5.2c, C5.2d, C5.2e, C5.2f J250: C5.2c, C5.2d, C5.2e, C5.2f. Introduction to rate of chemical reactions and collis...

Reversible Reactions | GCSE Bitesize Revision
Reversible Reactions | GCSE Bitesize Revision
This video provides examples of reversible chemical reactions and visually explains how dynamic equilibrium is achieved. It int...

C6 Global challenges

Extraction of Iron | Real World Chemistry
Extraction of Iron | Real World Chemistry
Spec references J248: C6.1a J250: C6.1a. The video outlines the industrial process of smelting iron ore into pig iron using a blast...

Production of Plastic from Crude Oil | Real World Chemistry
Production of Plastic from Crude Oil | Real World Chemistry
Spec references J248: C6.2m, C6.2n, C6.2o J250: C6.1k, C6.1l, C6.1m. This clip demonstrates how plastic is produc...

The Haber Process | Science Topics
The Haber Process | Science Topics
Spec references J248: C6.1d. The video starts with an overview of the industrial production of nitrate fertiliser through the Haber proces...

Reversible Reactions - the Haber process | GCSE Bitesize Revision
Reversible Reactions - the Haber process | GCSE Bitesize Revision
This video provides an overview of ammonia production through the Haber process, briefly touching on the ne...


Extraction of Iron | Real World Chemistry
Extraction of Iron | Real World Chemistry
Spec references J248: C6.1a J250: C6.1a. The video outlines the industrial process of smelting iron ore into pig iron using a blast...

Production of Plastic from Crude Oil | Real World Chemistry
Production of Plastic from Crude Oil | Real World Chemistry
Spec references J248: C6.2m, C6.2n, C6.2o J250: C6.1k, C6.1l, C6.1m. This clip demonstrates how plastic is produc...

The Haber Process | Science Topics
The Haber Process | Science Topics
Spec references J248: C6.1d. The video starts with an overview of the industrial production of nitrate fertiliser through the Haber proces...

Reversible Reactions - the Haber process | GCSE Bitesize Revision
Reversible Reactions - the Haber process | GCSE Bitesize Revision
This video provides an overview of ammonia production through the Haber process, briefly touching on the ne...
