OCR•J260•Twenty First Century Science
OCR GCSE Combined Science B
21 sections · 155 revision notes, with key terms, exam tips and past papers
Starts with Cell Structures, DNA, and Protein Synthesis.
Specification
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What’s on each paper: Biology · Chemistry · Physics · Combined Science
Papers 1 and 4
Chapter B1 Genetics and Inheritance
The Genome and Its Functions · Inheritance of Genetic Information · Applications and Ethics of Gene Technology4 notes
B1.1 The Genome and Its Functions
- Cell Structures, DNA, and Protein Synthesis 2 notes
B1.2 Inheritance of Genetic Information
B1.3 Applications and Ethics of Gene Technology
Chapter B2 Health and Disease
Causes of Disease · Organism Defences Against Pathogens · Prevention of Infection Spread · Lifestyle, Genes, and Health · Disease Treatment and Medicine8 notes
B2.1 Causes of Disease
B2.2 Organism Defences Against Pathogens
B2.3 Prevention of Infection Spread
B2.4 Lifestyle, Genes, and Health
- Non-Communicable Diseases 3 notes
B2.5 Disease Treatment and Medicine
- Medical Treatments and Drug Development 2 notes
Chapter B3 Food and Ecosystems
Photosynthesis · Plant Transport and Absorption · Ecosystem Interdependence · Population Dynamics and Ecosystem Conditions10 notes
B3.1 Photosynthesis
- Photosynthetic Processes and Rates 3 notes
B3.2 Plant Transport and Absorption
- Cellular Transport and Plant Vessels 3 notes
B3.3 Ecosystem Interdependence
- Biomass Transfer and Nutrient Cycling 3 notes
B3.4 Population Dynamics and Ecosystem Conditions
Chapter B4 Food and Growth Control
Cellular Respiration Process · Microscopy and Cell Structures · Organism Growth and Development · Stem Cells in Medicine6 notes
B4.1 Cellular Respiration Process
B4.2 Microscopy and Cell Structures
B4.3 Organism Growth and Development
- Cell Division and Differentiation 3 notes
B4.4 Stem Cells in Medicine
Chapter B5 Human Body Systems and Survival
Substance Transport in the Body · Nervous System and Responses · Hormonal Coordination and Control · Homeostasis and Internal Environments · Hormones in Human Reproduction · Blood Sugar Regulation and Diabetes9 notes
B5.1 Substance Transport in the Body
- Transport Systems and Exchange Surfaces 2 notes
B5.2 Nervous System and Responses
B5.3 Hormonal Coordination and Control
B5.4 Homeostasis and Internal Environments
B5.5 Hormones in Human Reproduction
- Reproductive Hormones and Technologies 3 notes
B5.6 Blood Sugar Regulation and Diabetes
Chapter B6 Evolution and Biodiversity
Development of Evolutionary Theory · Classification of Organisms · Biodiversity and Conservation4 notes
B6.1 Development of Evolutionary Theory
- Natural Selection and Evolution Evidence 2 notes
B6.2 Classification of Organisms
B6.3 Biodiversity and Conservation
Papers 2 and 4
Chapter C1 Air and Water
Evolution of the Earth's Atmosphere · Temperature Changes in Chemical Reactions · Evidence and Causes of Climate Change · Supplying Potable Water8 notes
C1.1 Evolution of the Earth's Atmosphere
- Particle Model and Atmospheric Evolution 2 notes
- Pollution Mitigation and Chemical Formulae 2 notes
C1.2 Temperature Changes in Chemical Reactions
C1.3 Evidence and Causes of Climate Change
- Climate Change Impacts and Mitigation 2 notes
C1.4 Supplying Potable Water
Chapter C2 Chemical Patterns
Development of the Atomic Model · The Periodic Table · Bonding in Metals and Non-Metals · Representing Chemical Reactions6 notes
C2.1 Development of the Atomic Model
C2.2 The Periodic Table
- Element Properties and Periodicity 2 notes
C2.3 Bonding in Metals and Non-Metals
C2.4 Representing Chemical Reactions
Chapter C3 Chemicals of the Natural Environment
Metallic Bonding and Structure · Extracting Metals Based on Reactivity · Electrolytes and Electrolysis · Crude Oil as a Material Source9 notes
C3.1 Metallic Bonding and Structure
C3.2 Extracting Metals Based on Reactivity
- Reactivity Series and Extraction Methods 2 notes
C3.3 Electrolytes and Electrolysis
- Processes and Products of Electrolysis 2 notes
C3.4 Crude Oil as a Material Source
- Fractional Distillation and Alkanes 2 notes
- Covalent Bonding and Cracking 2 notes
Chapter C4 Material Choices
Data-Driven Material Selection · Bonding, Structure, and Material Properties · Nanoparticles and Their Uses · Product End-of-Life and Life Cycle Assessments8 notes
C4.1 Data-Driven Material Selection
C4.2 Bonding, Structure, and Material Properties
- Chemical Bonds and Bulk Properties 3 notes
C4.3 Nanoparticles and Their Uses
- Properties and Risks of Nanoparticles 2 notes
C4.4 Product End-of-Life and Life Cycle Assessments
- Oxidation, Reduction, and LCAs 2 notes
Chapter C5 Chemical Analysis
Chemical Separation and Purity Testing · Calculating Amounts of Substances · Measuring Chemicals in Solution6 notes
C5.1 Chemical Separation and Purity Testing
- Purification and Chromatography Techniques 2 notes
C5.2 Calculating Amounts of Substances
- Conservation of Mass and Molar Calculations 2 notes
C5.3 Measuring Chemicals in Solution
- Concentration Calculations and Titrations 2 notes
Chapter C6 Making Useful Chemicals
Products from Acid Reactions · Controlling Reaction Rates · Factors Affecting Chemical Yield6 notes
C6.1 Products from Acid Reactions
- Acid Reactions and pH 2 notes
C6.2 Controlling Reaction Rates
- Factors Affecting Reaction Rates
- Measuring Rates and Enzymatic Catalysis 2 notes
C6.3 Factors Affecting Chemical Yield
Papers 3 and 4
Chapter P1 Radiation and Waves
Risks and Benefits of Radiation · Evidence and Mechanics of Climate Change · Wave Behavior and Properties5 notes
P1.1 Risks and Benefits of Radiation
- Electromagnetic Spectrum Properties 2 notes
P1.2 Evidence and Mechanics of Climate Change
P1.3 Wave Behavior and Properties
- Wave Motion and Interactions 2 notes
Chapter P2 Sustainable Energy
Energy Usage and Transfer · Electricity Generation Resources4 notes
P2.1 Energy Usage and Transfer
- Electrical Energy Efficiency 2 notes
P2.2 Electricity Generation Resources
- Energy Resources and the National Grid 2 notes
Chapter P3 Electric Circuits
Current, Charge, and Resistance · Series and Parallel Circuits · Rate of Energy Transfer · Magnetic Fields · Electric Motors and the Motor Effect9 notes
P3.1 Current, Charge, and Resistance
- Circuit Quantities and Characteristics 2 notes
P3.2 Series and Parallel Circuits
- Circuit Properties and Problem Solving 2 notes
P3.3 Rate of Energy Transfer
- Power, Energy, and Transformers 2 notes
P3.4 Magnetic Fields
- Magnets and Electromagnetism 2 notes
P3.5 Electric Motors and the Motor Effect
Chapter P4 Forces and Motion
Nature of Forces · Describing Motion · Forces, Momentum, and Acceleration · Work, Energy, and Power10 notes
P4.1 Nature of Forces
P4.2 Describing Motion
- Speed, Velocity, and Acceleration
- Motion Graphs and Equations 2 notes
P4.3 Forces, Momentum, and Acceleration
- Resultant Forces and Momentum 2 notes
- Newton's Laws and Reaction Times 2 notes
P4.4 Work, Energy, and Power
Chapter P5 Radioactive Materials
Atomic Structure and Radioactivity · Radiation Hazards and Safety4 notes
P5.1 Atomic Structure and Radioactivity
- Atomic Models and Isotopes
- Radioactive Decay and Half-Life 2 notes
P5.2 Radiation Hazards and Safety
Chapter P6 Models of Matter
Energy, Temperature, and Density · Particle Model and Heating · Materials Under Stress4 notes
P6.1 Energy, Temperature, and Density
- Density, Heat Capacity, and Latent Heat 2 notes
P6.2 Particle Model and Heating
P6.3 Materials Under Stress
All papers
Chapter BCP7 Ideas about Science
Scientific Investigation Considerations · Drawing Conclusions from Data · Development of Scientific Explanations · Societal Impact of Science and Technology8 notes
IaS1 Scientific Investigation Considerations
IaS2 Drawing Conclusions from Data
- Data Presentation and Evaluation 3 notes
IaS3 Development of Scientific Explanations
- Scientific Models and Theories 3 notes
IaS4 Societal Impact of Science and Technology
Chapter BCP8 Practical Skills
Biology Practical Activities · Chemistry Practical Activities · Physics Practical Activities18 notes
Biology Practical Activities
Chemistry Practical Activities
Physics Practical Activities
Chapter 5 Mathematical Skills and Equations
Mathematical Skills · Equations in Physics9 notes
5e Mathematical Skills
5h Equations in Physics
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