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.
PracticalEnthalpy change of combustion of ethanol | practical videos | 14–16 years
Video and resources investigating the heat energy change of combustion of ethanol
PracticalSimple distillation | practical videos | 14–16 years
Video and resources showing how to separate water from a coloured solution
PracticalPaper chromatography | practical videos | 14–16 years
Video and resources showing how to separate colours in inks using paper chromatography
PracticalRates 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
ExperimentAcid–base back titration | 16–18 years
Write balanced equations and calculate reacting masses and moles to find the limiting reagent
Feature7 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
Ideas12 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
PracticalElectrochemical cells | practical videos | 16–18 students
Video and supporting resources to support electrochemistry practical work, including two microscale experiments, animation and cell diagrams
PracticalPreparation 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
PracticalQualitative 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
PracticalRates 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)
ResourceReactivity 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
PracticalConservation of mass | practical videos | 14–16 years
Video and supporting resources for two practical experiments exploring conservation of mass.
ResourceDisplacement 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
ResourceElectrolysis – practical videos | 14–16 students
Video and supporting resources investigating electrolysis of aqueous solutions.
ResourcePreparing a salt – practical videos | 14–16 students
Video and resources showing how to prepare a salt using neutralisation, filtration, evaporation and crystallisation techniques.
PracticalIdentifying 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
ExperimentChromatography 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.
ExperimentThe ‘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