Lesson library
34 of 34 lessons
Inside the Atom
Atoms, Elements and the Periodic Table → Atomic Structure
Protons, neutrons, electrons and how we model the atom.
Measuring Properties of Matter
Matter and Its Properties → Properties of Matter
Mass, volume and density — and how to measure them reliably.
Particles and States of Matter
Matter and Its Properties → States of Matter
Using the particle model to explain solids, liquids and gases.
Understanding Ions
Ions and Our Health → Ions
What ions are, how atoms become charged, and why your body depends on them.
Current, Voltage and Resistance
Electricity and Magnetism → Circuits and Current
Building circuits and using V = I x R with confidence.
Ionic Bonding
Ions and Our Health → Ionic Compounds and Health
How oppositely charged ions attract to build giant ionic lattices.
Reading the Periodic Table
Atoms, Elements and the Periodic Table → The Periodic Table
Groups, periods and predicting properties from patterns.
Body Systems Working Together
Body Systems → Digestive and Circulatory Systems
How cells, tissues, organs and systems build one working body.
Properties of Waves
Waves, Light and Sound → Wave Behaviour
Amplitude, wavelength, frequency and the wave equation.
Physical vs Chemical Changes
Physical and Chemical Changes → Chemical Changes
Deciding from evidence whether a new substance has formed.
Acids, Bases and pH
Acids, Bases and Solutions → Acids and Bases
The pH scale, indicators and neutralisation.
Heating, Cooling and Particle Motion
Physical and Chemical Changes → Changes of State
What thermal energy does to particles during changes of state.
Balancing Chemical Equations
Chemical Reactions and Conservation of Mass → Chemical Equations
Making the atoms on both sides match.
Variation and Natural Selection
Evolution and Natural Selection → Natural Selection
Why some individuals survive, reproduce and pass on their traits.
What Affects Reaction Rates
Reaction Rates → Factors Affecting Rate
Temperature, concentration and surface area explained by collisions.
Cells: The Basic Unit of Life
Cells and Living Systems → Cell Structure and Function
Why every living thing is built from cells, and how we know.
Photosynthesis and Food Production
Ecosystems and Energy Flow → Energy Flow and Matter Cycling
How plants turn light, water and carbon dioxide into food.
DNA, Genes and Chromosomes
Genetics and Heredity → Inheritance of Traits
The instruction manual inside every one of your cells.
Describing Forces
Forces and Motion Basics → Describing Forces
Pushes, pulls, arrows and what a resultant force actually does.
Newton's Three Laws
Newton's Laws and Momentum → Newton's Laws
Inertia, F = m x a, and why forces always come in pairs.
Energy Stores and Transfers
Energy Transfers → Energy Stores and Transfers
Where energy is stored, how it moves, and why it is never lost.
Conservation of Mass
Chemical Reactions and Conservation of Mass → Conservation of Mass
Why mass never disappears in a chemical reaction.
Kinetic and Gravitational Potential Energy
Energy Transfers → Energy Stores and Transfers
Calculating energy in moving and raised objects.
Digestion and Nutrient Transport
Body Systems → Digestive and Circulatory Systems
From a mouthful of food to glucose reaching a muscle cell.
Inside Plant and Animal Cells
Cells and Living Systems → Cell Structure and Function
Organelles, their jobs, and what makes a plant cell different.
Ions in the Human Body
Ions and Our Health → Ionic Compounds and Health
Electrolytes, nerve signals and why sports drinks exist.
Cellular Respiration and Energy Release
Ecosystems and Energy Flow → Energy Flow and Matter Cycling
Releasing the energy stored in glucose — with and without oxygen.
Evidence for Evolution
Evolution and Natural Selection → Natural Selection
Fossils, anatomy and DNA — three independent lines of evidence.
Punnett Squares and Probability
Genetics and Heredity → Inheritance of Traits
Predicting inherited traits using probability.
Cations and Anions
Ions and Our Health → Ions
Naming, writing and predicting the charges of positive and negative ions.
Speed, Distance and Time
Forces and Motion Basics → Describing Forces
Calculating speed and reading motion from a graph.
Light: Reflection and Refraction
Waves, Light and Sound → Wave Behaviour
Why light bounces, bends and makes a straw look broken.
Momentum and Collisions
Newton's Laws and Momentum → Newton's Laws
Why crumple zones save lives.
Magnetism and Electromagnets
Electricity and Magnetism → Circuits and Current
Magnetic fields, and how electricity makes a magnet you can switch off.