English National Curriculum - Science
Mission Objectives
Describe the properties of halogens
Explain why the elements in Group 7 react similarly
Explain the trend in reactivity as you go down Group 7
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Words and meanings to learn
halogen
any of the elements found in Group 7 of the periodic table
diatomic
a molecule consisting of two atoms, such as hydrogen (H₂), oxygen (O₂), nitrogen (N₂), and the halogens (e.g., Cl₂, Br₂)
halide
a compound formed when a halogen reacts with another element, often a metal, halides contain halide ions (e.g., Cl⁻, Br⁻, I⁻)
non-metal
a type of element that lacks the properties of metals; they are typically poor conductors of heat and electricity, have lower densities, and are not malleable or ductile
volatility
a measure of how readily a substance evaporates; a volatile substance has a high tendency to turn into vapour at a given temperature and pressure
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.
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