Sandrine Bouchelkia
Sandrine is a senior science technician at St Paul's Way Trust School in London.
She shares her interest in microscale chemistry by delivering workshops to science technicians. Sandrine is passionate about 'everyday science', a subject that she regularly writes about in her school's newsletter.
- Practical
Enthalpy change of combustion of ethanol | practical videos | 14–16 years
Video and resources investigating the heat energy change of combustion of ethanol
- Practical
Simple distillation | practical videos | 14–16 years
Video and resources showing how to separate water from a coloured solution
- Practical
Paper chromatography | practical videos | 14–16 years
Video and resources showing how to separate colours in inks using paper chromatography
- Practical
Rates of reaction | practical videos | 14–16 years
Video and resources showing how the concentration of sodium thiosulfate solution affects its rate of reaction with hydrochloric acid
- Experiment
Acid–base back titration | 16–18 years
Write balanced equations and calculate reacting masses and moles to find the limiting reagent
- Feature
7 tips to weather the cost of living crisis
Use these thrifty ideas to reduce the impact of the economic downturn in your classroom
- Experiment
‘Gold’ coins on a microscale | 14–16 years
Practical experiment where learners produce ‘gold’ coins by electroplating a copper coin with zinc, includes follow-up worksheet
- Ideas
12 top tips for safe science in your school
Advice for technicians (and teachers) on safely opening up the prep room and on ensuring a successful start to practical work
- Practical
Electrochemical cells | practical videos | 16–18 students
Video and supporting resources to support electrochemistry practical work, including two microscale experiments, animation and cell diagrams
- Practical
Preparation of an organic liquid | practical videos | 16–18 students
Video and supporting resources to support practical work based on synthesis of an organic liquid, the experiment includes the stages of preparation, separation and purification
- Practical
Qualitative tests for organic functional groups | practical videos | 16–18 students
Video and supporting resources to support a practical investigation to identify organic functional groups using a range of qualitative tests
- Practical
Rates of reaction | practical videos | 16–18 students
Video and supporting resources, includes an initial rate (iodine clock reaction) and continuous monitoring method (volume of gas)
- Resource
Reactivity of metals | practical videos | 14–16 years
Video with supporting resources featuring three experiments investigating the relative reactivity of metals, including metal displacement reactions in microscale
- Practical
Conservation of mass | practical videos | 14–16 years
Video and supporting resources for two practical experiments exploring conservation of mass.
- Resource
Displacement reactions – practical videos | 14–16 students
Video and resources investigating the displacement reactions between the halogens chlorine, bromine and iodine and their respective halides in microscale
- Resource
Electrolysis – practical videos | 14–16 students
Video and supporting resources investigating electrolysis of aqueous solutions.
- Resource
Preparing a salt – practical videos | 14–16 students
Video and resources showing how to prepare a salt using neutralisation, filtration, evaporation and crystallisation techniques.
- Practical
Identifying ions – practical videos | 14–16 students
Video resource showing how to identify ions in various solutions. Flame tests, sodium hydroxide test (microscale) and tests for negative ions: carbonate, sulfate and halide ions
- Experiment
Chromatography of sweets | 11–14 years
Try this class practical to carry out chromatography using dye from different coloured M&M’s®. Includes kit list and safety instructions.
- Experiment
The ‘breathalyser’ reaction | 16–18 years
Try this demonstration to recreate an early ‘breathalyser’ test, passing ethanol vapour through potassium dichromate. Includes kit list and safety instructions