Study guides

States of Matter and Changes of State

OCR·GCSE

Master the fundamental principles of States of Matter for your OCR GCSE Chemistry exam. This guide breaks down the particle model, changes of state, and energy transfers, providing you with the essential knowledge to secure top marks.

States of matter and mixtures

Pearson Edexcel·GCSE

Pearson-GCSE-Chemistry

Master the fundamentals of how particles behave in solids, liquids, and gases, and learn how to separate complex mixtures into pure substances. This topic is heavily tested in exams, particularly your ability to choose and justify separation techniques and calculate Rf values.

Static Electricity

OCR·GCSE

Static Electricity (OCR 2.5) explores how insulators acquire charge through the transfer of electrons during friction, and how those charges create non-contact electrostatic forces and electric fields. This topic is a perennial favourite for examiners because it tests both microscopic particle understanding (AO1) and the ability to apply concepts to real-world contexts such as sparking, earthing, and charge induction (AO2). Mastery here also underpins your understanding of current electricity, electromagnetic induction, and atomic structure across the specification.

Static Electricity

Pearson Edexcel·GCSE

This guide covers Edexcel GCSE Physics Topic 10.3, Static Electricity. It explains how objects become charged through friction, the forces they exert, and the concept of electric fields. Crucially, it details how to secure top marks by explaining real-world applications and avoiding common pitfalls, making it essential for exam success.

Static Electricity

AQA·GCSE

Unlock top marks in AQA GCSE Physics by mastering Static Electricity (4.2.5). This guide breaks down electron transfer, electric fields, and Higher Tier sparking, giving you the examiner's perspective on how to secure every point.

Statistics

AQA·GCSE

8300

Statistics is the science of collecting, analysing, and interpreting data. It is a highly practical and mark-friendly topic that appears in every single GCSE and A-Level Mathematics paper.

Statistics

Pearson Edexcel·GCSE

1MA1

Master the art of data with this comprehensive guide to GCSE Statistics. From calculating averages to interpreting complex scatter graphs and cumulative frequency curves, this topic is packed with highly predictable, winnable marks that appear in every single exam series.

Statistics

Pearson Edexcel·GCSE

601/4700/3

Mastering data representation is your key to unlocking major marks in GCSE Mathematics. This guide covers everything from constructing basic charts to interpreting complex histograms and cumulative frequency graphs, ensuring you have the precise techniques examiners demand.

Statistics

Eduqas·GCSE

WJEC-GCSE-Mathematics

Statistics is the mathematics of collecting, analysing, and interpreting data to make informed decisions. Mastering this topic is essential for your exams, as it appears heavily on both calculator and non-calculator papers and rewards methodical working.

Statistics: •• including box plots •• including quartiles and inter-quartile range (Higher tier only)

AQA·GCSE

8300

Statistics: construct and interpret diagrams for grouped discrete data and continuous data, ie histograms with equal and unequal class intervals and cumulative frequency graphs, and know their appropriate use (Higher tier only)

AQA·GCSE

8300

Statistics: infer properties of populations or distributions from a sample, whilst knowing the limitations of sampling

AQA·GCSE

8300

Statistics: interpret and construct tables, charts and diagrams, including frequency tables, bar charts, pie charts and pictograms for categorical data, vertical line charts for ungrouped discrete numerical data, and know their appropriate use

AQA·GCSE

8300

Statistics: know that it does not indicate causation draw estimated lines of best fit make predictions interpolate and extrapolate apparent trends whilst knowing the dangers of so doing

AQA·GCSE

8300

Statistics: use and interpret scatter graphs of bivariate data recognise correlation

AQA·GCSE

8300

Stem cells: A stem cell is an undifferentiated cell of an organism which is capable of giving rise to many more cells of the same type, and from which certain other cells can arise from differentiation.

AQA·GCSE

8464

Stem cells: Crop plants with special features such as disease resistance can be cloned to produce large numbers of identical plants for farmers.

AQA·GCSE

8464

Stem cells: In therapeutic cloning an embryo is produced with the same genes as the patient. Stem cells from the embryo are not rejected by the patient’s body so they may be used for medical treatment.

AQA·GCSE

8464

Stem cells: Meristem tissue in plants can differentiate into any type of plant cell, throughout the life of the plant.

AQA·GCSE

8464

Stem cells: Rare species can be cloned to protect from extinction.

AQA·GCSE

8464

Stem cells: Stem cells from adult bone marrow can form many types of cells including blood cells.

AQA·GCSE

8464

Stem cells: Stem cells from human embryos can be cloned and made to differentiate into most different types of human cells.

AQA·GCSE

8464

Stem cells: Stem cells from meristems in plants can be used to produce clones of plants quickly and economically.

AQA·GCSE

8464

Stem cells: Students should be able to describe the function of stem cells in embryos, in adult animals and in the meristems in plants.

AQA·GCSE

8464

Stem cells: The use of stem cells has potential risks such as transfer of viral infection, and some people have ethical or religious objections.

AQA·GCSE

8464

Stem cells: Treatment with stem cells may be able to help conditions such as diabetes and paralysis.

AQA·GCSE

8464

Stopping Distance

OCR·GCSE

This guide provides a comprehensive breakdown of Stopping Distance for OCR GCSE Physics (1.11). It covers the core concepts of thinking and braking distance, the crucial mathematical relationships involved, and provides examiner-level insights to help you secure top marks. Master this topic and you'll be ready for both calculation and long-answer questions.

Storage Devices (Hard Drives, SSDs, USBs)

OCR·GCSE

This guide provides a comprehensive, exam-focused breakdown of OCR GCSE Computer Science Topic 1.3: Storage Devices. It covers the essential knowledge of primary vs. secondary storage, compares the key characteristics of HDDs, SSDs, and USB drives, and provides step-by-step guidance for crucial file size calculations to help you secure maximum marks."

Storm on the Island

AQA·GCSE

8702

'Storm on the Island' is a powerful exploration of human vulnerability in the face of nature's relentless force. It rewards candidates who can unpick its political undertones and masterful use of structure, making it a brilliant text for demonstrating perceptive, critical analysis.

Stress

AQA·A-Level

This guide provides a comprehensive breakdown of the AQA A-Level Psychology topic of Stress. It delves into the physiological responses (SAM and HPA), psychological factors like personality and workplace stress, and crucial evaluation of management techniques, ensuring candidates are prepared to maximise their marks."