Complete No-Prep lesson with exam questions, tasks and answers on Eukaryotic, Prokaryotic, Animal and Plant Cells for AQA GCSE (9-1) Science / Biology. This lesson covers all of AQA GCSE Biology / Combined Science 4.1.1.1 and 4.1.1.2. except for estimating the size or area of sub-cellular structures, which I have included in the lesson on microscopes later in the sequence. As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. In my lessons I take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Teaching notes • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Worked examples of calculations / questions. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. The lesson was written for AQA GCSE Science / Biology but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam questions, tasks and answers on Chromosomes, Cell Cycle and Mitosis for AQA GCSE (9-1) Science / Biology. This lesson covers all of AQA GCSE Biology / Combined Science 4.1.2.1 and 4.1.2.2. As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. My lessons are designed to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Teaching notes • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. The lesson was written for AQA GCSE Science / Biology but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam style questions, tasks and answers on Active Transport for AQA GCSE (9-1) Science / Biology. This lesson covers all of AQA GCSE Biology / Combined Science Biology 4.1.3.3 “Active Transport”. As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam-style questions. My lessons are designed to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Teaching notes • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. The lesson was written for AQA GCSE Science / Biology but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam style questions, tasks and answers on the Digestive System and Principles of Organisation for AQA GCSE (9-1) Science / Biology. This lesson covers all of AQA GCSE Combined Science / Biology 4.2.1 “principles of organisation” and parts of 4.2.2.1 “the human digestive system”. In this lesson students learn about cells, tissues, organs and organ systems (4.2.1), and then about the digestive system and its function (which covers parts of 4.2.2.1). Note: The remaining parts of 4.2.2.1, which explain enzymes in detail, are in the next lesson in this topic. As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam-style questions. My lessons are designed to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Teaching notes • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. The lesson was written for AQA GCSE Science / Biology but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam style questions, tasks and answers on Osmosis and the Osmosis Required Practical for AQA GCSE (9-1) Science / Biology. This lesson covers all of AQA GCSE Biology / Combined Science Biology exam spec point 4.1.3.2 (osmosis) and also covers the osmosis required practical (RP2 for Combined Science Trilogy and RP3 for GCSE Biology). As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam-style questions. My lessons are designed to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Teaching notes • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Worked examples of calculations / questions. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. The lesson was written for AQA GCSE Science / Biology but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam style questions, tasks and answers on Surface Area to Volume Ratio and Exchange Surfaces for AQA GCSE (9-1) Science / Biology. This lesson covers the second part of AQA GCSE Biology / Combined Science exam spec point 4.1.3.1, regarding surface area to volume ratio and exchange surfaces. The first part of 4.1.3.1 (diffusion and factors that affect the rate of diffusion) is covered in a previous lesson in the sequence as I felt that otherwise there would be too much content for one lesson. As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam-style questions. My lessons are designed to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Teaching notes • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Worked examples of calculations / questions. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. The lesson was written for AQA GCSE Science / Biology but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam style questions, tasks and answers on Diffusion for AQA GCSE (9-1) Science / Biology. This lesson covers the first part of exam spec point 4.1.3.1 - diffusion and the factors that affect diffusion. Note: The second part of 4.1.3.1 (surface area to volume ratio and exchange surfaces) is covered in a subsequent lesson in the sequence as I felt that there would be too much content for one lesson. As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam-style questions. My lessons are designed to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Teaching notes • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. The lesson was written for AQA GCSE Science / Biology but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam questions, tasks and answers on Energy Transfers and Power for the Electricity Topic of AQA GCSE (9-1) Science / Physics. This lesson covers exam spec points 4.2.4.1 and 4.2.4.2 (Physics) or 6.2.4.1 and 6.2.4.2 (Combined Science). As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. My lessons are ideal for non-Physicists - as a Biologist who retrained as a Physics teacher I know how to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Worked examples of calculations / questions. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. Learning objectives: Describe how domestic appliances transfer energy. Describe how the amount of energy an appliance transfers depends on its power and how long it is on for. Describe how work is done when charge flows in a circuit. Calculate the amount of energy transferred by electrical work using: E = P t E = Q V. Calculate power using P = V I P = I2 R The lesson was written for AQA GCSE Science / Physics but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam questions, tasks and answers on Static Electricity for AQA GCSE (9-1) Physics, covering exam spec point 4.2.5.1 (Static Charge). As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. My lessons are ideal for non-Physicists - as a Biologist who retrained as a Physics teacher I know how to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. Learning objectives: Describe the production of static electricity through friction between insulators. Describe evidence that charged objects exert forces of attraction or repulsion on each other through a non-contact force. Explain how the transfer of electrons between objects can explain static electricity. The lesson was written for AQA GCSE Physics but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam questions, tasks and answers on the National Grid for the Electricity Topic of AQA GCSE (9-1) Science / Physics. This lesson covers all of AQA GCSE Physics 4.2.4.3 / Combined Science 6.2.4.3 Please note that this lesson is for the Electricity topic - there is a similar lesson on Transformers and the National Grid for GCSE Physics only in the Magnetism and Electromagnetism topic. As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. My lessons are ideal for non-Physicists - as a Biologist who retrained as a Physics teacher I know how to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Worked examples of calculations / questions. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. Learning objectives: Describe the structure and purpose of the national grid. Describe the difference between step-up and step-down transformers and how each is used in the national grid. Explain why the national grid is an efficient way to transfer energy. The lesson was written for AQA GCSE Science / Physics but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam style questions, tasks and answers on Enzymes and Digestion for AQA GCSE (9-1) Science / Biology. This lesson covers parts of AQA GCSE Combined Science / Biology 4.2.2.1 “the human digestive system”. I split 4.2.2.1 into two lessons – this lesson covers enzymes and digestive enzymes, while the previous lesson covers the digestive system and its function. Calculating rates of reaction is covered in the required practical lesson. As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam-style questions. My lessons are designed to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Teaching notes • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. The lesson was written for AQA GCSE Science / Biology but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam questions, tasks and answers on Magnets, Magnetism and Magnetic Fields for AQA GCSE (9-1) Science / Physics. This lesson covers all of AQA GCSE Physics 4.7.1.1 and 4.7.1.2 / Combined Science 6.7.1.1 and 6.7.1.2. This lesson was significantly rewritten and improved Feb 2024. It is very likely that if you do all the mini practicals this lesson will take more than one hour – a double lesson is ideal. Because this is the first lesson in the sequence and establishes the basics of the topic, it may also be suitable for many KS3 classes with editing. As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. My lessons are ideal for non-Physicists - as a Biologist who retrained as a Physics teacher I know how to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Teaching notes • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. The other lessons in this topic are: 2. Electromagnets and Electromagnetism: https://www.tes.com/teaching-resource/resource-12595426 FREE 3. The Motor Effect and Left Hand Rule: https://www.tes.com/teaching-resource/resource-12596435 4. The Generator Effect: https://www.tes.com/teaching-resource/resource-12600640 5. AC, DC, Alternators, Dynamos, Microphones & Loudspeakers: https://www.tes.com/teaching-resource/resource-12609865 6. Transformers and the National Grid: https://www.tes.com/teaching-resource/resource-12610433 Discounted Bundle: https://www.tes.com/teaching-resource/resource-12610445 The lesson was written for AQA GCSE Science / Physics but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam style questions, tasks and answers for AQA GCSE (9-1) Science / Biology. This double lesson resource covers two of the Required Practicals for AQA GCSE Biology / Combined Science Biology: food tests and investigating the effect of pH on amylase. I have written each as a separate lesson with its own starter, lesson objectives and questions. As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam-style questions. My lessons are designed to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Teaching notes • Two Starter / Do Now Activities. • Explanation slides in “chunked” sections with animated diagrams. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. The lesson was written for AQA GCSE Science / Biology but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam questions, tasks and answers on Electric Motors and Loudspeakers for AQA GCSE (9-1) Science / Physics. This lesson covers all of the following AQA exam spec points: Electric Motors: GCSE Physics 4.7.2.3 / Combined science 6.7.2.3 which is for Higher Tier students only. Loudspeakers: GCSE Physics 4.7.2.4 which is for GCSE Physics students only and is again for Higher Tier. This GCSE Physics only section is clearly marked. As a Secondary Science teacher, Deputy Headteacher, writer and examiner for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. My lessons are ideal for non-Physicists - as a Biologist who retrained as a Physics teacher I know how to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Teaching notes. • Starter / Do Now Activity • Explanation slides in “chunked” sections with animated diagrams. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. The lesson was written for AQA GCSE Science / Physics but is very likely to be applicable to other exam specifications. Please leave a rating / review and all other feedback gratefully received!

Complete No-Prep lesson with exam questions, tasks and answers on States of Matter, Particle Model (Kinetic Theory), and Changes of State for AQA GCSE (9-1) Science / Physics. This was updated 31st Jan 2022 as I realised that I had not included answers to a couple of questions, and then I made some mainly cosmetic changes 3rd April 2022 - please download again if you are one of the many people who purchased before then. As a Secondary Science teacher and Deputy Headteacher for many years I make high quality no-prep lessons so busy teachers can teach outstanding lessons without spending hours planning. This high quality lesson includes explanations, different types of in-lesson assessment (all with answers) and unique exam questions. My lessons are ideal for non-Physicists - as a Biologist who retrained as a Physics teacher I know how to take learners on a journey that builds up their understanding step by step, while still going into a lot of depth. The preview video shows a representative sample of slides from the resource so that you get a good idea of what it includes before you buy. What’s Included: • Two Starter / Do Now activities so you can extend this over two lessons if needs be. • Explanation slides in “chunked” sections with animated diagrams. • Multiple questions in different question styles and difficulties - no need for worksheets. Each “chunked” explanation section typically includes a set of “learning check / quick questions” followed by a set of in-depth questions on the learning from that “chunk” of the lesson. All questions have answers. • Exam-style questions on the whole lesson at the end of the lesson- these are unique, based on real exam questions but not just copied from exam boards. • Answers for all questions • All easily editable to adapt to your teaching or to use in existing lessons. • Slightly humorous, at points, if you like that sort of thing. Learning objectives: Describe the states of matter – the properties of solids, liquids and gases. Describe the changes of state between the different states of matter. Describe kinetic theory - how the particles are arranged and move in solids, liquids and gases. Link the forces between particles to the arrangement and movement of the particles and to the properties of solids, liquids and gases. Explain why mass is conserved when a change of state occurs. Written for AQA GCSE Science and Physics but likely to be applicable to other exam specifications and certainly adaptable for a more able KS3 class. Please leave a rating / review and all other feedback gratefully received!