English National Curriculum - Science

Unknown salts - required practical

Mission Objectives

Identify positive and negative ions using chemical tests

Interpret results to determine unknown compounds

Evaluate reliability and confidence in identifications

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Rocket Words Quiz

Rocket Words Quiz

See if you know all the meanings of the rocket words

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Word Search Game

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Keywords

Words and meanings to learn

ions

atoms or groups of atoms that have gained or lost electrons, giving them a positive or negative charge

precipitate

a solid that forms when two solutions react together; it appears as a cloudy or powdery solid in the liquid

halides

negative ions formed from Group 7 elements (the halogens), such as chloride (Cl⁻), bromide (Br⁻) and iodide (I⁻)

sulphates

negative ions with the formula SO₄²⁻

risk assessment

a plan written before doing a practical to identify possible dangers, how likely they are, and how to reduce the risks

This lesson has been written by

Sarah Mintey MBE

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.

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Sarah was awarded an MBE for her services to tech and education in 2020. 

Samantha Batch

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!

Required Resources

Required practical handout for teacher and technicians.

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