This unit on Chemical Analysis is aligned with the AQA GCSE Combined Science: Trilogy specification and is designed to be delivered flexibly, while assuming a progression of knowledge and skills developed through earlier units. It builds directly on students’ understanding of particle theory, chemical changes, and separation techniques established in previous key stages and earlier chemistry topics.
The unit covers essential substantive knowledge, including the distinction between pure substances and mixtures, formulation of products, and the identification of common gases through qualitative tests. Pupils also explore chromatography as a technique for separating mixtures and identifying substances based on their physical properties. These topics are taught in context, allowing for meaningful connections between theory and practical science.
Throughout the unit, disciplinary knowledge is embedded through carefully structured opportunities to apply working scientifically skills. Students plan and conduct tests for common gases , interpret chromatograms, and draw conclusions about the purity and composition of substances. These practical applications reinforce core principles and develop confidence in laboratory techniques.
To promote deep learning and secure understanding, each lesson incorporates Assessment for Learning (AfL) strategies, such as retrieval practice, structured peer discussion, and guided reflection. Common misconceptions—such as confusion between mixtures and compounds, or the interpretation of chromatogram results—are addressed explicitly.
Developing Experts supports schools in delivering this unit by linking the chemistry content to real-world applications in industries such as pharmaceuticals, forensic science, and environmental testing. Through career-linked insights and context-rich content, students are encouraged to see how chemical analysis is used beyond the classroom, enhancing their understanding of science in everyday life and future careers.
Samantha is a dedicated and accomplished science educator with over 15 years of leadership experience in the field, coupled with a strong background in scientific analysis. She has a proven track record of strategically managing educational departments, driving operational efficiencies, and nurturing collaborative relationships with stakeholders.
Samantha previously served as the Head of Chemistry and Sixth Form Tutor, Ilkley Grammar School, Ilkley with extensive Key Stage 4 and 5 teaching experience and leadership. In addition to her teaching and leadership roles, she is also an examiner for AQA, providing her with valuable insight into assessment standards and exam specifications.
In her spare time, Samantha enjoys playing the accordion with her local orchestra and has recently taken up cricket, where she's enthusiastically honing her skills both on and off the pitch!
Sarah is a former headteacher and charity CEO who founded Developing Experts in October 2015 with the goal to create a fit-for-purpose curriculum for schools. The company has created a science curriculum for children ages 4-16 which is delivered through sequenced lessons mapped against the National Curriculum in biology, chemistry, and physics. Developing Expert's innovative approach to learning has already been road-tested and voted 'best EdTech product in Europe', winning Tech Nation’s Rising Stars earlier in 2019 and a place on Google for Startups Immersion program 2020. In 2022 Developing Experts won the BETT Awards for Best Classroom Resource - Teaching Aid. Sarah is a 'LDC Top 50 Most Ambitious Business Leader' 2022. In October 2022 Developing Experts joined Tech Nation's Upscale 8.0 programme.
Sarah is delighted to be working with over 6500 UK schools and clients such as the Royal Horticulture Society, Network Rail, Rolls Royce, BEIS, National Nuclear Labs, Anglian Water and the Ministry of Defence.
Sarah was awarded an MBE for her services to tech and education in 2020.
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