Water and Air

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Unit Summary

This short unit explores evaporation and condensation, the composition of the atmosphere and also the energy changes that take place when the states of matter change.

Children will be able to get in some laboratory practice during this unit, and then follow this up by analysing and presenting data from the results.

This unit has been written by

Alison Green

Alison is a qualified secondary chemistry teacher and former scientist, seamlessly blending her background in scientific development with a passion for education. With over 15 years of teaching experience across state and independent schools, including most recently at Stafford Grammar School, Alison specialises in equipping students with the tools to excel in Chemistry at KS3, GCSE and A-levels. Her transition to online education, backed by a Master’s degree, has spurred her transition to freelance content creation and chemistry tutoring, tapping into a wealth of examining experience spanning over ten years to steer students towards their desired academic and professional paths.

When she's not shaping young minds, Alison unwinds by exploring the natural beauty of the Shropshire hills and embracing the tranquillity of Tai Chi, mirroring the balance she instils in her educational endeavours.

Dr Shannon Weldon

Shannon started her journey with Developing Experts by completing PHD placement while studying for her Doctorate in Developmental Biology at the University of East Anglia. Shannon has since joined the team full-time as a Project Manager working with the company's industry partners. Shannon knows a lot about chickens!

Heather Bingham

Heather qualified with a first-class honours degree in climate science from the University of East Anglia. Since, she has joined Developing Experts as a writer and presenter, specialising in earth and environmental sciences.

She is also an internationally published science author, having written a series of CLIL (Content and Language Integrated Learning) digital textbooks aimed at improving learners’ understanding of English whilst igniting an interest in science.

Jonathan Badgery

Jonathan is a leading science writer and presenter. Having attended military school in the UK, Jon attended the University of East Anglia in the UK, where he gained his BSc in Chemical Physics. Following this, Jon completed his PGCE (Post-graduate Certificate of Education), teaching science and leading physics in large city secondary schools in the UK.

Jon is a passionate scientist and specialises in science communication; delivering CPD workshops, science lectures, shows and community science days.

Katie Barrie


Katie is the Chief Operating Officer at DE, which means she oversees HR, finance and our business model. After studying Drama at Exeter University, Katie spent three years as a primary teacher, before relocating to Norfolk and joining Developing Experts. 

In her spare time, Katie likes to sing with Norwich Harmony barbershop chorus and has recently formed a quartet. Katie loves cooking and spending time with her husband, Bryan and dog, Bertie. She has an endearing laugh, which has to be heard to be believed. Many of us see Katie as the office 'Mum', she gives great hugs and keeps our spirits up.  

Contact: [email protected]  

Mike Linley

Mike studied zoology and botany at Durham University and followed this with 3 years of postgraduate study at Bristol University with the Science Research Council.

Mike uses his vast experience to add knowledge and engagement to Developing Experts, particularly within the disciplines of biology and zoology. He has over 20 years TV production experience, including writing and producing nature programmes for the Disney channel and, for a period of time, was Sir David Attenborough’s scientific advisor.

Paul Usher

Paul studied English Literature at Nottingham Trent University and gained his PGCE (Post-graduate Certificate of Education) at the University of East Anglia. Following this, Paul had a successful teaching career, leading English across two large secondary schools and then becoming Vice Principal. He has led several schemes in cross-curricular literacy and has also led teaching and learning in a school, overseeing teacher training and development. Paul has also lectured at universities for graduate teachers.

At Developing Experts, Paul oversees the strategic direction of the curriculum and uses his creativity to structure the teaching and learning strategy. He also edits for accuracy in literacy and liaises with translation services to ensure a high-quality end product.