English National Curriculum - Science
Mission Objectives
Explain the difference between potable water and pure water
Describe how ground, fresh and salty water are treated to produce potable water
Give reasons for each step in the water purification process
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Words and meanings to learn
potable water
water that is safe to drink; it contains other dissolved substances, like certain mineral ions
pure water
contains only water molecules
desalination
the process of removing salt and other minerals from sea water to produce potable water
sterilising
the process of killing harmful microorganisms (bacteria, viruses, etc.) in water, often using chlorine or UV light
distillation
a process used to produce pure water by boiling water to create steam, then condensing the steam back into liquid water, leaving impurities behind
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.
Samantha is an accomplished science educator whose current work centres on curriculum design and professional development, supporting teachers to deliver high-quality science education through evidence-informed approaches. She is a former Head of Chemistry and Sixth Form Tutor with extensive Key Stage 4 and 5 experience, and has worked as an AQA examiner, giving her valuable insight into assessment standards and what students need to succeed.
Underpinning this is a strong foundation in applied science built across a range of industry roles. Samantha has held scientific roles at John Smith's Brewery, Yorkshire Water and WasteCare, where she led technical projects, drove operational efficiencies and ensured compliance with industry standards. Across these roles she has first-hand experience of how scientific knowledge translates into measurable outcomes in professional and commercial environments.
In her spare time, Samantha enjoys playing the accordion with her local orchestra and has recently taken up cricket.
pH tests
• safety goggles
• pure distilled water
• samples of water at different pH values
• universal indicator solution or paper
Dissolved solids
• sample of a prepared salt solution or mineral bottled water (concentration unimportant but
should give good crystal formation when evaporated)
• Bunsen burner
• tripod
• gauze
• heatproof mat
• evaporating basin
• weighing balance.
Distillation
• conical flask with delivery tube with bung/ Liebig condenser
• 1 boiling tube
• ice bath
Handouts
Expert film
Mission assignment film
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