This revision lesson has been designed to challenge the students on their use of a range of mathematical skills that could be assessed on the AQA GCSE Combined Science papers. The mathematical element of the AQA GCSE Combined Science course has increased significantly since the specification change and therefore success in those questions which involve the use of maths can prove to be the difference between one grade and another or possibly even more. The engaging PowerPoint and accompanying resources contain a wide range of activities that include exam-style questions with displayed mark schemes and explanations so that students can assess their progress. Other activities include differentiated tasks, class discussion points and quick quiz competitions such as “YOU DO THE MATH” and “FILL THE VOID”. The following mathematical skills (in a scientific context) are covered in this lesson: The use of Avogadro’s constant Rearranging the formula of an equation Calculating the amount in moles using mass and relative formula mass Calculating the relative formula mass for formulae with brackets Using the Periodic Table to calculate the number of sub-atomic particles in atoms Changes to electrons in ions Balancing chemical symbol equations Converting between units Calculating concentration in grams per dm cubed and volumes of solutions Calculating size using the magnification equation Using the mean to estimate the population of a sessile species Calculating percentages to prove the importance of biodiversity Calculating percentage change Calculating the acceleration from a velocity-time graph Recalling and applying the Physics equations Understanding prefixes that determine size Leaving answers to significant figures and using standard form Helpful hints and step-by-step guides are used throughout the lesson to support the students and some of the worksheets are differentiated two ways to provide extra assistance. Due to the detail of this lesson, it is estimated that it will take in excess of 3 hours of GCSE teaching time to cover the tasks and for this reason it can be used over a number of lessons as well as during different times of the year for revision.

This revision resource contains an engaging and detailed PowerPoint (66 slides) and associated worksheets, all of which are differentiated to allow students of different abilities to access the work. The range of activities that include exam questions with explained answers and quiz competitions covers the content within topic 11 (Air and water) of the CIE IGCSE Chemistry specification for examination in June and November 2020 and 2021. The resource was written to cover as much of the content as possible but the following topics have received particular attention: The fractional distillation of air to separate oxygen and nitrogen The composition of clean air The variety of reactions that form carbon dioxide The changes in the atmospheric levels of carbon dioxide and the link to global warming The common pollutants and their effects on health and buildings The treatment of water to make it safe The chemical tests for water The conditions needed for the Haber Process Efforts have been made during the design of this lesson to make connections between topic 11 and the other topics in order to show students how important it is to make Biological links. In addition, there is a big emphasis on mathematical skills and guidance is given throughout to break down any barriers that students may have with these types of questions.

This revision resource has been designed to include a range of activities that will engage the students whilst they assess their understanding of the content of topic C2 (Experimental techniques) of the CIE IGCSE Combined Science specification for examination in June and November 2020 and 2021. Exam questions, quick tasks and quiz competitions such as “SEPARATE the FACT from the FICTION” will challenge the students on their recall of the content as well as their ability to apply this knowledge. The lesson was written to cover as much of the content as possible, but the following topics have received particular attention: • Simple distillation and fractional distillation Choosing appropriate apparatus Experimental and investigational skills Crystallisation and filtration Paper chromatography Calculating the retention factor This resource contains an engaging PowerPoint (45 slides) and associated worksheets and is ideal for use at the end of this topic or in the lead up to mocks or the actual terminal exams

This is a concise revision resource which has been designed to cover the crucial details of topic C5 (Electricity and chemistry) of the CIE IGCSE Combined Science specification, for examination in June and November 2020 and 2021. The topic of electrolysis is commonly assessed in the examinations so time was taken during the design to ensure that understanding is constantly checked so that any misconceptions are addressed. The following content receives particular attention in this revision lesson: The use of the terms electrolyte, electrode, cathode and anode Understanding that solid ionic compounds cannot be used in electrolysis, but only electrolytes when molten or in aqueous solution The attraction of positive ions to the cathode and the gain of electrons The attraction of negative ions to the anode and the loss of electrons Predicting the products at the electrodes The lesson finishes with a summary task about the electrolysis of aluminium oxide where students have to apply their knowledge. This sheet has been differentiated two ways so that students of different abilities are able to complete the task

This revision resource contains an engaging PowerPoint (56 slides) and associated worksheets, one of which has been differentiated two ways to allow students of differing abilities to access the work. The range of activities cover the content of Topic C4 (Stoichiometry) of the CIE IGCSE Combined Science specification, for examination in June and November 2020 and 2021. The aim was to cover as much of the content as possible but the following topics have received particular attention: Naming compounds containing 2 or 3+ elements Constructing word equations for general chemical reactions Monatomic or diatomic molecules Writing formulae for ionic compounds using the charges on the ions Balancing symbol equations Writing fully balanced chemical symbol equations with state symbols Students are given hints and guidance throughout the lesson so they can build confidence in the lead up to an end of topic test, mocks or the terminal exams.

A lot of time and effort has gone into the design of this revision resource as it covers the very important Atoms, elements and compounds topic (C3) of the CIE IGCSE Combined Specification which will be examined in June and November 2020 and 2021. This topic tends to contribute a high volume of the questions in the examination papers as it contains fundamental understanding. The resource contains a detailed and engaging PowerPoint (87 slides) and associated worksheets, which have been differentiated to allow differing abilities the chance to complete the task. The range of activities that include exam questions, quick tasks and quiz competitions aim to cover as much of the content as possible but the following topics have received particular attention: Metals vs non-metals Using the proton and nucleon number to calculate the number of sub-atomic particles Atoms vs ions Drawing dot and cross diagrams for ionic compounds The structure of an ionic compound and the relation to its properties Drawing dot and cross diagrams for simple molecules Understanding of the terms solution, solvent, solute and soluble Throughout the lesson, links have been made to other modules (e.g. Electricity and chemistry) so that students can see how they will be expected to make these connections. The detail of this lesson means that it can be used a number of times and is ideal for revision during the learning of C3, at the end of the topic or in the lead up to mocks or terminal exams.

This revision resource contains an engaging and informative PowerPoint (55 slides) and differentiated worksheets that will enable the students to assess their understanding of the topic C9 content of the CIE IGCSE Combined Science specification for examination in June and November 2020 and 2021. The range of exam questions (with explained answers), quick tasks and quiz competitions have been designed to cover as much content as possible but the following topics have received particular attention: • The properties of the alkali metals, halogens and noble gases • Explaining the reactivity of these groups in terms of electron configurations • The transition elements • The arrangement of the Periodic Table • Predicting properties of the undiscovered elements The question sheet about the properties of the different groups has been differentiated three ways so that a range of abilities can access the work

This revision resource has been designed to include a range of activities that will engage the students whilst they assess their understanding of the content of topic C12 of the CIE IGCSE Combined Science specification for examination in June and November 2020 and 2021. Exam questions, quick tasks and quiz competitions such as “Are you on FORM” will challenge the students on their recall of the content as well as their ability to apply this knowledge. The lesson was written to cover as much of the content as possible, but the following topics have received particular attention: • The conditions needed for cracking • Alkanes and alkenes as the products of cracking • Alkanes as saturated hydrocarbons with single covalent bonds between their atoms • Alkenes as unsaturated hydrocarbons with one double covalent bond • Testing between saturated and unsaturated hydrocarbons using aqueous bromine solution • The fractional distillation of crude oil • The uses of the fractions This resource contains an engaging PowerPoint (51 slides) and associated worksheets and is ideal for use at the end of this topic or in the lead up to mocks or the actual terminal exams

This revision resource contains an engaging PowerPoint (44 slides) and associated worksheets, all of which have been differentiated two ways to allow students of differing abilities to access the work. The range of activities cover the content of Topic C11 (Air and water) of the CIE IGCSE Combined Science specification, for examination in June and November 2020 and 2021. The aim was to cover as much of the content as possible but the following topics have received particular attention: The composition of clean air Changes in atmospheric carbon dioxide levels The formation of carbon dioxide Common air pollutants and their effects on health and structures The treatment of water to make it safe The chemical tests for water A number of quiz competitions are included in the lesson such as “POLLUTE the air…with the answer” where students compete to be the first to identify a common pollutant from the clues. These competitions act to engage them whilst the exam questions and quick tasks will enable them to assess their understanding of the content.

This revision resource includes exam questions, understanding checks and quiz competitions, all of which have been designed to motivate and engage the students whilst they assess their understanding of the content found in topic 2 (Experimental techniques) of the CIE IGCSE Chemistry specification for examination in June and November 2020 and 2021. This revision resource contains an engaging PowerPoint (50 slides) and associated worksheets, some of which have been differentiated to help and challenge differing abilities. The range of activities have been designed to cover as much of the Core and Supplement content as possible but the following sub-topics have been given particular attention: Identify substances and assess purity from melting and boiling point data Describe and explain the method of distillation Understand how fractional distillation separates mixtures according to their boiling points Describe and explain the method of crystallisation Demonstrate knowledge and understanding of paper chromatography Interpret simple chromatograms, including the calculation of the Rf values In addition, topics from other modules such as states of matter at different temperatures are covered so that students can see the importance of being able to make connections and links between Chemistry topics.

This REVISION resource has been written with the aim of motivating the students whilst they are challenged on their knowledge of the content in Chemistry TOPIC 2 (States of matter and mixtures) of the Edexcel GCSE Combined Science specification. The resource contains an engaging and detailed PowerPoint (65 slides) and accompanying worksheets, most of which are differentiated to allow a range of abilities to access the work. The wide range of activities, which include exam questions and quiz competitions, have been designed to cover as much of topic 2 as possible but the following sub-topics have been given a particular focus: Pure substances in Science Using melting and boiling points to distinguish between pure and impure Separating mixtures using simple and fractional distillation Determining a state of matter using data Physical changes Crystallisation The mobile and stationary phases of paper chromatography Calculating the retention factor The treatment of water to make potable water This resource is suitable for use at the end of topic 2, in the lead up to mocks or in the preparation for the final GCSE exams.

This REVISION resource has been designed to motivate and engage students whilst they are challenged on their knowledge of the content in topics C6-C10 of the AQA Trilogy GCSE Combined Science specification which can be assessed on PAPER 4. This is fully-resourced and contains a detailed PowerPoint (118 slides) and accompanying worksheets, some of which have been differentiated. The resource was written with the aim of covering as many C6-C10 sub-topics as possible, but the following ones have received particular focus: Pure substances in Science Chromatography Detecting gases Reversible reactions Changing conditions and the position of the equilibrium Factors affecting the rate of a chemical reaction The structure of the alkanes Complete combustion of the alkanes Cracking and the alkenes Fractional distillation of crude oil This resource can be used in combination with the PAPER 3 revision resource which covers the content in Chemistry topics C1 - C5 as well as the other AQA GCSE Combined Science REVISION lessons which I’ve uploaded

This REVISION resource has been designed to motivate and engage students whilst they are challenged on their knowledge of the content in topics C6-C10 of the AQA GCSE Chemistry specification which can be assessed on PAPER 2. This is fully-resourced and contains a detailed PowerPoint (146 slides) and accompanying worksheets, some of which have been differentiated. The resource was written with the aim of covering as many of the sub-topics in C6-C10 as possible, but the following ones have been given a particular focus: The general formulae of the alkanes, alkenes, alcohols and carboxylic acids Reversible reactions and equilibrium Changing conditions and the position of equilibrium The factors affecting the rate of reaction Complete combustion of the alkanes and climate change The changes in carbon dioxide levels over time Addition and condensation polymers Fractional distillation and the properties of the fractions Analysis and interpreting chromatograms Detecting cations This lesson can be used in combination with the PAPER 1 REVISION resource that I have uploaded.

This REVISION resource has been designed to motivate and engage students whilst they are challenged on their knowledge of the content in topics C1-C3 of the OCR GCSE Chemistry specification which can be assessed on PAPER 1. This is fully-resourced and contains a detailed PowerPoint (184 slides) and accompanying worksheets, some of which have been differentiated. The resource was written with the aim of covering as many of the sub-topics in C1-C5 as possible, but the following ones have been given a particular focus: The organisation of the Periodic Table The structure of atoms and ions Isotopes The properties of ionic compounds Drawing dot and cross diagrams to represent ionic compounds Electrolysis of molten salts and solutions Writing half equations for the cathode and anode Neutralisation reactions Writing balanced chemical symbol equations Ionic equations Simple and giant covalent structures Diamond and graphite Calculating the relative formula mass Moles and Avogadro’s constant Calculating the mass in reactions Due to the extensiveness of this resource, it is likely to be used over the course of a number of lessons with a particular class and this allows the teacher to focus in on any sub-topics which are identified as needing more time.

This REVISION resource has been designed to motivate and engage students whilst they are challenged on their knowledge of the content in topics C1-C5 of the AQA GCSE Chemistry specification which can be assessed on PAPER 1. This is fully-resourced and contains a detailed PowerPoint (208 slides) and accompanying worksheets, some of which have been differentiated. The resource was written with the aim of covering as many of the sub-topics in C1-C5 as possible, but the following ones have been given a particular focus: The chemical properties of the Group 1, 7 and 0 elements The structure of atoms and ions The properties of ionic compounds Drawing dot and cross diagrams to represent ionic compounds Extracting metals using carbon REDOX reactions Electrolysis of molten salts and solutions Neutralisation reactions Writing balanced chemical symbol equations Simple and giant covalent structures Diamond and graphite Calculating the relative formula mass Moles and Avogadro’s constant Calculating the mass in reactions Molar volume (Gas calculations) Concentration of solutions The organisation of the Periodic Table Due to the extensiveness of this resource, it is likely to be used over the course of a number of lessons with a particular class and this allows the teacher to focus in on any sub-topics which are identified as needing more time.

This REVISION resource has been designed to motivate and engage students whilst they are challenged on their knowledge of the content in topics C1-C5 of the AQA Trilogy GCSE Combined Science specification which can be assessed on PAPER 3. This is fully-resourced and contains a detailed PowerPoint (170 slides) and accompanying worksheets, some of which have been differentiated. The resource was written with the aim of covering as many C1-C5 sub-topics as possible, but the following ones have received particular focus: The chemical properties of the Group 1, 7 and 0 elements The structure of atoms and ions The properties of ionic compounds Drawing dot and cross diagrams to represent ionic compounds Extracting metals using carbon REDOX reactions Electrolysis of molten salts and solutions Neutralisation reactions Writing balanced chemical symbol equations Simple and giant covalent structures Diamond and graphite Moles and Avogadro’s constant The organisation of the Periodic Table Due to the extensiveness of this resource, it is likely to be used over the course of a number of lessons with a particular class and this allows the teacher to focus in on any sub-topics which are identified as needing more time.