Slovakia Maturita Chemistry case studies
Slovakia Maturita Chemistry · Put your knowledge to work in context.
The Maturitná skúška z chémie is the school-leaving examination in chemistry taken by students at the end of secondary education in Slovakia. It forms part of the maturita, the certificate used for admission to universities and for entry into laboratory, health, food, environmental and teaching careers. Chemistry is usually an elective maturita subject, so candidates typically take it alongside a compulsory language and often mathematics or biology. The examination has a written external part set centrally and an internal part conducted at the candidate's own school, which includes an oral component and a school-based assessment. The Slovakia Maturita Chemistry case studies are 5 cases and about 1,886 words.
1The Overheated Nitrocellulose Sample
A school laboratory stores an old bottle of nitrocellulose (cellulose nitrate) with a nitrogen content of about 13.4 %. A technician notices the bottle feels warm to the touch and there is a faint smell of nitrogen oxides.
441 words, about 2 min2Choosing a Titration Indicator for a Weak Acid
A student must determine the concentration of a household vinegar sample. They dilute 10.00 cm³ of vinegar to 100.0 cm³ and titrate 25.00 cm³ portions with 0.1000 mol dm⁻³ NaOH.
378 words, about 2 min3Galvanic Corrosion on a Garden Gate
A garden gate frame is made of mild steel. The hinges are brass (copper–zinc alloy), and the fixings are galvanised steel bolts.
350 words, about 2 min4The Fertiliser Runoff Problem
A farmer applies ammonium nitrate fertiliser to a field beside a small lake. Within two weeks, the lake shows a dense green algal bloom; later the algae die and the water becomes cloudy with a foul smell, and dissolved oxygen drops sharply.
351 words, about 2 min5Synthesising an Ester in the School Lab
Students prepare ethyl ethanoate by refluxing ethanol, ethanoic acid and concentrated sulfuric acid. The mixture is then distilled, and the distillate is washed with sodium carbonate solution.
366 words, about 2 min