Chemistry personal statement example

Why do you want to study this course or subject?

On Saturdays I work at the aquatics counter of a garden centre, where customers bring jam jars of pond water for testing. I add reagents, compare the colour with a chart and explain what the result means. Early on I noticed that two ponds with the same total ammonia reading could need quite different advice, and asking why led me to the equilibrium between ammonium ions and ammonia. At higher pH, more of it exists as unionised ammonia, which is far more harmful to fish, so a hard-water pond on a warm afternoon can be at greater risk than the number alone suggests. Realising that one equilibrium could change what I told a worried customer made chemistry feel less like a list of facts and more like a way of reasoning about real systems. I want to study it at degree level because I enjoy that step from a measurement to an explanation, and I want to understand the methods behind the kits I use: how the colour reactions work, where their errors come from and how instrumental techniques improve on them. Reading Periodic Tales by Hugh Aldersey-Williams showed me how much of the subject grew from people working with everyday materials, which suits the way I learn best.

How have your qualifications and studies helped you to prepare?

I am studying Chemistry, Biology and Maths at A level. In Chemistry I have enjoyed the practical endorsement most, particularly titrations and the preparation of an organic product, where small habits such as rinsing the burette with the solution or reading the meniscus at eye level made a visible difference to my results. For my Extended Project I measured the vitamin C content of orange juice over five days of storage using iodine titration with a starch indicator. I compared freshly squeezed juice with cartoned juice, kept in the fridge and at room temperature, and repeated runs until I had concordant titres within 0.10 cm3. The freshly squeezed juice lost a larger share of its vitamin C, and writing up the project taught me to separate what my data showed from what I could only suggest, such as the role of dissolved oxygen. Maths has helped more than I expected: logarithms made pH calculations intuitive, and rearranging rate equations is much easier when the algebra is automatic. Biology has given me a feel for how enzymes and pH interact. I entered the Chemistry Olympiad this year and received a Silver certificate, which encouraged me to keep working through harder problems on equilibria and kinetics.

What else have you done to prepare outside of education, and why are these experiences useful?

My Saturday job has made me better at explaining science to people who did not ask for a lesson. Customers want to know whether their fish are safe, so I have learned to give a clear answer first and the reasoning second, and to say when a home test cannot settle a question. I also restock shelves, handle the till and help price water treatments, which has made me reliable about routine work as well as the interesting parts. Outside work, I volunteer at a local canoe club on Sunday mornings. I help run junior sessions, checking buoyancy aids, carrying boats and keeping an eye on younger paddlers on the water, and I completed a club first aid course last spring. Over the winter I helped an experienced member patch a cracked fibreglass hull. Mixing the resin and hardener in the right proportion and watching the pot warm as it cured was a satisfying reminder that chemistry happens in sheds as well as laboratories. At home I cook for my two younger brothers on weekdays when my parents work late, which has made me organised with my time. These commitments have taught me to stay patient, follow procedures carefully and enjoy practical problems.