Combined Science

    Edexcel
    GCSE

    Specification: Pearson-GCSE-Combined-Science

    The EDEXCEL GCSE Combined Science specification covers 29 topics with 0 learning objectives (Pearson-GCSE-Combined-Science). Use the topic browser below to explore subtopics, exam tips, common mistakes, and key terminology for each area of the course.

    This subject will help you develop key knowledge and skills required for exam success.

    29

    Topics

    0

    Objectives

    396

    Exam Tips

    406

    Pitfalls

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    Study Guides

    20 revision guides for Edexcel GCSE Combined Science

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    Key Features

    • Master key concepts
    • Develop exam technique
    • Apply knowledge effectively

    About Edexcel GCSE Combined Science

    The Edexcel GCSE Combined Science qualification (1SC0) gives you the chance to study biology, chemistry and physics in a balanced way, building a solid foundation in all three sciences. Through this course, you’ll explore key ideas that explain how living organisms work, how materials behave and interact, and how energy and forces underpin the physical world. It’s designed to develop your scientific thinking, practical skills and ability to apply knowledge to new situations – exactly what you need for further study or a science-based career.

    The specification is clearly structured into 18 core topics (six per science) and 18 mandatory practicals. You’ll learn about everything from cells and genetics to atomic structure, chemical reactions, electricity, forces and waves. The course emphasises ‘working scientifically’ – you’ll design experiments, analyse data and evaluate evidence just like a real scientist. Because it’s a linear qualification, all exams are at the end of Year 11, giving you time to build and deepen your understanding.

    Edexcel’s approach links the three sciences together wherever possible, helping you see the bigger picture. Their well-organised resources, including a dedicated mathematics in science section, ensure you’re not caught out by the maths requirements. Whether you’re aiming for the Foundation or Higher tier, this specification provides a rigorous and rewarding journey through the sciences, preparing you for A-levels, vocational courses or the world of work.

    Assessment Structure

    Assessment is entirely through six written exam papers, two for each science: Biology Paper 1 & 2, Chemistry Paper 1 & 2, and Physics Paper 1 & 2. Each paper lasts 1 hour 10 minutes, carries 60 marks and includes a variety of question types: multiple-choice, short answer, calculations and extended writing. There is no coursework or controlled assessment; instead, your knowledge and understanding of the 18 core practicals are examined within the written papers. All papers are available at Foundation Tier (grades 1–5) and Higher Tier (grades 4–9). In total, across the six papers, you can score a maximum of 360 marks, and the qualification counts as two GCSEs.

    Why Choose Edexcel?

    • Clear specification and abundant support: Edexcel’s specification is logically sequenced and supplemented with a huge range of free and endorsed resources, from textbooks to online revision tools. This makes it easier to follow the course and target your revision effectively.
    • Exam-only assessment: With no practical coursework or controlled assessments, all your final grade comes from the terminal exam papers. This reduces pressure during the course and lets you focus on mastering the content and skills exactly as they’ll be tested.
    • Strong emphasis on mathematical and practical skills: The specification includes a dedicated ‘maths in science’ appendix and clearly lists the required practical activities. This transparency helps you know exactly what’s expected, and the skills you gain are highly valued by colleges and employers.

    Frequently Asked Questions

    What Gets Top Grades

    A*/Grade 9

    Knowledge & Understanding

    Demonstrates comprehensive and accurate knowledge

    • Uses correct subject-specific terminology
    • Shows detailed understanding of concepts
    • Makes accurate connections between topics
    • Demonstrates depth beyond surface-level knowledge

    Application

    Applies knowledge effectively to new contexts

    • Selects relevant knowledge for the question
    • Adapts understanding to unfamiliar scenarios
    • Uses examples appropriately
    • Shows awareness of context

    Analysis & Evaluation

    Develops sophisticated analytical arguments

    • Constructs logical chains of reasoning
    • Considers multiple perspectives
    • Weighs evidence to reach justified conclusions
    • Acknowledges limitations and nuances

    Key Command Words

    Edexcel
    State
    1 mark

    Give a single fact or term

    Identify
    1 mark

    Name, select, or recognise

    Outline
    2 marks

    Set out main features briefly

    Describe
    2-4 marks

    Give an account of what something is like or what happens

    Explain
    3-6 marks

    Give reasons with developed cause→effect chains

    Compare
    2-4 marks

    State similarities AND differences (both required)

    Analyse
    6-9 marks

    Examine in detail showing cause→effect→consequence chains

    Evaluate
    6-12 marks

    Weigh up BOTH sides, reach JUSTIFIED conclusion

    Assess
    6-12 marks

    Make judgments about importance with justification

    Calculate
    2-4 marks

    Show formula→substitution→calculation→answer with units

    Common Exam Mistakes

    Pitfalls to avoid in your exams

    • •Confusing intermolecular forces with covalent bonds when explaining melting points of simple molecular substances
    • •Assuming all covalent substances have high melting points (failing to distinguish between simple molecular and giant covalent)
    • •Incorrectly stating that ionic compounds conduct electricity as solids
    • •Failing to mention the role of delocalised electrons when explaining metallic conductivity
    • •Failing to include a scale bar or magnification factor on scientific drawings
    • •Incorrectly converting units (e.g., between mm, µm, and nm) during magnification calculations
    • •Poor labelling of diagrams (e.g., lines not touching the structure or crossing over)
    • •Inability to correctly focus the microscope at higher magnifications

    Top Examiner Tips

    Expert advice for exam success

    • •Always link the physical property directly to the type of bonding and structure present
    • •Use the term 'intermolecular forces' only for simple molecular covalent substances, never for ionic or giant covalent structures
    • •When describing electrical conductivity, specify the state of the substance (solid, molten, or aqueous)
    • •Be prepared to draw or interpret dot and cross diagrams for simple molecules
    • •Always ensure your scientific drawings are large, clear, and use a sharp pencil
    • •Practice unit conversions frequently, as these are common in magnification questions
    • •Remember that magnification = image size / real size
    • •Ensure labels on diagrams are drawn with straight lines that do not cross

    Specification Topics

    29 topics

    Key concepts in chemistry

    This topic covers the classification of substances into ionic, simple molecular (covalent), giant covalent, and metallic structures. It explains how the specific bonding and structure of these substances determine their physical properties, such as melting/boiling points, solubility, and electrical conductivity.

    Types of substance, Atomic structure and isotopes, The periodic table +2 more

    0 objectives21 tips22 pitfalls5 subtopics

    Key concepts in biology

    This core practical focuses on the development of essential microscopy skills, including the preparation of biological slides and the use of light microscopes to observe specimens. Students are required to produce accurate, labelled scientific drawings and perform magnification calculations to demonstrate their understanding of cell structure and scale.

    Core Practical: Investigate biological specimens using microscopes, Microscope technology, Core Practical: Investigate osmosis in potatoes +6 more

    0 objectives38 tips40 pitfalls9 subtopics

    Key concepts of physics

    This topic establishes the foundational requirements for scientific measurement and communication in physics. It covers the use of SI units, standard prefixes, and the application of significant figures and standard form in calculations.

    SI units and physical quantities

    0 objectives4 tips4 pitfalls

    Electricity and circuits

    This topic covers the fundamental principles of electrical circuits, focusing on the differences between series and parallel configurations. It explores the relationships between potential difference, current, and resistance, including the use of circuit diagrams and the behavior of various components like resistors, lamps, and diodes.

    Series and parallel circuits, Mains electricity and safety, Circuit components and diagrams +1 more

    0 objectives18 tips18 pitfalls4 subtopics

    Magnetism and the motor effect

    This topic covers the fundamental principles of magnetism, including the properties of permanent and induced magnets and the nature of magnetic fields. It also explores the motor effect, where a current-carrying conductor in a magnetic field experiences a force, and the application of Fleming's left-hand rule.

    Magnetic fields and electromagnets, Motor effect

    0 objectives8 tips8 pitfalls2 subtopics

    Electromagnetic induction

    This topic covers the principles of electromagnetic induction, specifically focusing on the operation of transformers and their role in the national grid. It explains how alternating current in one circuit induces a current in another and why high-voltage transmission is essential for efficiency.

    Transformers and national grid

    0 objectives4 tips4 pitfalls

    Particle model

    This topic explores the particle model of matter, focusing on the arrangement, movement, and energy of particles in solids, liquids, and gases. It covers the concept of density, physical changes of state, and the thermal energy changes associated with heating and state transitions.

    Density and states of matter, Core Practical: Investigate the properties of water, Core Practical: Investigate the densities of solid and liquids

    0 objectives15 tips15 pitfalls3 subtopics

    Forces and matter

    This topic covers the mechanical properties of materials, specifically focusing on the relationship between force and extension in springs. It includes the distinction between elastic and inelastic distortion and the calculation of work done when stretching a spring.

    Elasticity and springs, Core Practical: Investigate the extension and work done when applying forces to a spring

    0 objectives8 tips9 pitfalls2 subtopics

    Motion and forces

    This core practical investigates the relationship between force, mass, and acceleration by varying the masses added to trolleys. Students use experimental data to demonstrate Newton's second law, F = ma, by measuring the acceleration of a trolley under different conditions.

    Core Practical: Investigate the relationship between force, mass and acceleration, Newton's laws, Scalar and vector quantities +2 more

    0 objectives21 tips23 pitfalls5 subtopics

    States of matter and mixtures

    This core practical investigates the composition of inks using two distinct separation techniques: simple distillation and paper chromatography. Students learn to separate mixtures based on physical properties, such as boiling points in distillation and solubility in chromatography, to identify components within ink samples.

    Core Practical: Investigate the composition of inks using simple distillation and paper chromatography, Methods of separating and purifying substances, States of matter

    0 objectives14 tips14 pitfalls3 subtopics

    Cells and control

    This topic covers the role of stem cells in growth and development, including their function in animals and plant meristems. It also requires an evaluation of the potential benefits and risks associated with using stem cells in medical treatments.

    Stem cells, Mitosis and the cell cycle, Cancer and cell division +2 more

    0 objectives19 tips21 pitfalls5 subtopics

    Chemical change

    This core practical involves the preparation of pure, dry hydrated copper sulfate crystals by reacting copper oxide with dilute sulfuric acid. The process requires heating the acid in a water bath, filtering the excess copper oxide, and then crystallising the solution to obtain the final product.

    Core Practical: Investigate the preparation of pure, dry hydrated copper sulfate crystals, Electrolytic processes, Acids, alkalis and neutralisation +2 more

    0 objectives22 tips22 pitfalls5 subtopics

    Genetics

    Meiosis is a type of cell division that results in the production of four genetically different haploid gametes. It involves the production of daughter cells with half the number of chromosomes compared to the parent cell.

    Meiosis, DNA structure and genome, Variation and mutations +2 more

    0 objectives17 tips17 pitfalls5 subtopics

    Conservation of energy

    This topic covers the fundamental principles of energy, including the various stores of energy and the mechanisms by which energy is transferred between them. It emphasizes the law of conservation of energy, the concept of a closed system, and the quantitative analysis of energy transfers in mechanical, electrical, and thermal processes.

    Energy stores and transfers, Efficiency and energy resources

    0 objectives9 tips9 pitfalls2 subtopics

    Extracting metals and equilibria

    This topic covers the concept of reversible reactions, where products can react to reform the original reactants, and the state of dynamic equilibrium. It specifically focuses on the Haber process as a key industrial application, examining how temperature, pressure, and concentration affect the position of equilibrium.

    Reversible reactions and equilibria, Obtaining and using metals

    0 objectives8 tips8 pitfalls2 subtopics

    Natural selection and genetic modification

    This topic covers the classification of organisms into the three domains of life, moving away from the traditional five-kingdom system. It explores how genetic analysis has provided the evidence for this modern classification method.

    Classification and domains, Evolution by natural selection, Selective breeding and genetic engineering +1 more

    0 objectives14 tips14 pitfalls4 subtopics

    Waves

    This topic covers the fundamental properties of waves, including the distinction between longitudinal and transverse waves. Students learn to use key wave terminology such as frequency, wavelength, amplitude, and period, and apply mathematical relationships to calculate wave speed.

    Wave properties, Core Practical: Investigate the suitability of equipment to measure the speed, frequency and wavelength of a wave

    0 objectives9 tips9 pitfalls2 subtopics

    Health, disease and the development of medicines

    This topic explores the definition of health and the distinction between communicable and non-communicable diseases. It examines how lifestyle factors, such as diet, exercise, alcohol consumption, and smoking, contribute to the development of non-communicable diseases like cardiovascular disease, obesity, and liver disease.

    Lifestyle factors and non-communicable diseases, Communicable and non-communicable diseases, Pathogens and spread of infection +2 more

    0 objectives21 tips21 pitfalls5 subtopics

    Light and the electromagnetic spectrum

    This topic covers the continuous electromagnetic spectrum, ranging from radio waves to gamma rays, and explains that all these waves are transverse and travel at the same speed in a vacuum. It explores how these waves transfer energy from source to observer, their varying interactions with matter, and the harmful effects of excessive exposure to higher frequency radiations.

    Electromagnetic spectrum, Core Practical: Investigate refraction in rectangular glass blocks

    0 objectives9 tips9 pitfalls2 subtopics

    Plant structures and their functions

    This topic covers the essential transport systems in plants, specifically the roles of xylem and phloem in moving water, mineral ions, and sucrose. It details the structural adaptations of these tissues and explains the processes of transpiration and translocation within the plant.

    Plant transport systems (xylem and phloem), Core Practical: Investigate the effect of light intensity on the rate of photosynthesis, Transpiration and environmental factors +1 more

    0 objectives18 tips18 pitfalls4 subtopics

    Radioactivity

    This topic covers the hazards associated with ionising radiation, including the biological effects of tissue damage and mutations. It also addresses safety precautions for patients and medical personnel, and distinguishes between the concepts of contamination and irradiation.

    Dangers and safety of radiation, Radioactive decay and half-life, Atomic structure and isotopes

    0 objectives11 tips12 pitfalls3 subtopics

    Groups in the periodic table

    This topic covers the properties and trends of Group 7 elements, known as the halogens, within the periodic table. It focuses on their physical states, chemical reactivity, and the patterns observed in their displacement reactions with halide ions.

    Group 7 (Halogens), Group 1 (Alkali metals), Group 0 (Noble gases)

    0 objectives10 tips10 pitfalls3 subtopics

    Rates of reaction and energy changes

    This topic explores the energy changes that occur during chemical reactions, distinguishing between exothermic and endothermic processes. It covers the role of bond breaking and bond making in energy changes, the concept of activation energy, and the use of reaction profiles to represent these energy shifts.

    Heat energy changes in chemical reactions, Core Practical: Investigate the effects of changing the conditions of a reaction on the rates of chemical reactions

    0 objectives10 tips10 pitfalls2 subtopics

    Animal coordination, control and homeostasis

    This topic covers the endocrine system, focusing on how hormones are produced in endocrine glands and transported to target organs to regulate body functions. It includes the roles of specific hormones like adrenalin, thyroxine, and those involved in the menstrual cycle, as well as the regulation of blood glucose levels and the management of diabetes.

    Hormones and endocrine system, Diabetes, Menstrual cycle and contraception +1 more

    0 objectives17 tips17 pitfalls4 subtopics

    Fuels and Earth science

    This topic explores the Earth's early atmosphere, the formation of oceans, and the subsequent rise of oxygen due to photosynthesis. It also covers the greenhouse effect, the impact of human activity on climate change, and the evaluation of evidence regarding atmospheric carbon dioxide and temperature.

    Earth and atmospheric science, Fuels and crude oil

    0 objectives9 tips10 pitfalls2 subtopics

    Exchange and transport in animals

    This topic covers the fundamental biological process of cellular respiration, distinguishing between aerobic and anaerobic pathways. It examines how living organisms release energy for metabolic processes and includes a mandatory core practical to investigate respiration rates.

    Respiration, Blood, blood vessels and the heart, Exchange surfaces and surface area to volume ratio +1 more

    0 objectives18 tips18 pitfalls4 subtopics

    Energy - Forces doing work

    This topic explores the relationship between work done, energy transfer, and power. It covers the definition of work done by forces, the calculation of energy changes in systems, and the concept of power as the rate of energy transfer.

    Work done and power

    0 objectives4 tips4 pitfalls

    Forces and their effects

    This topic explores the fundamental nature of forces and their interactions, covering both contact and non-contact forces. It focuses on representing forces as vectors, understanding free body diagrams, and analyzing the effects of balanced and unbalanced forces on objects.

    Interaction of forces

    0 objectives4 tips4 pitfalls

    Ecosystems and material cycles

    This topic explores the levels of organisation within ecosystems and the complex interactions between biotic and abiotic factors. It examines human impacts on biodiversity, including both positive and negative interactions, and the essential roles of the carbon, water, and nitrogen cycles in maintaining ecosystem balance.

    Human interactions and biodiversity, Levels of organisation and biotic/abiotic factors, Carbon, water and nitrogen cycles +1 more

    0 objectives16 tips16 pitfalls4 subtopics

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    Combined Science Edexcel GCSE Topics & Revision