Chemistry (H): Required short but precise answers
Reaction to Leaving Certificate 2018 Chemistry (Higher Level) by Tara Lyons, Chemistry teacher at The Institute of Education.
A straight forward paper with no surprises. The questions were broken down in to very clear parts, requiring short, but precise answers.
Question 1 was a very straight forward volumetric analysis. However knowledge of formula and a test for an anion was also needed here.
Question 2 was a nice question that examined students on several organic techniques, identifying apparatus, describing procedures and a short calculation.
Question 3 was a straight forward question on calculating the heat of reaction and demonstrating an understanding of instruments and hazard symbols.
Question 4 (short questions) had the usual array of short questions that covered the entire syllabus.
One of the questions was nice and topical and asked why the swimming and diving pools in the 2018 Olympics turned green.
Question 5, which is always on atomic theory, was a very straight forward question on isotopes and radioactivity.
Question 6 was on fuels and heats of reaction. A knowledge of the techniques used to improve the quality of petrol was examined here.
Question 7 involved a rates of reaction question, which required the students to draw a graph and extrapolate information from their graph.
Question 8 was a general organic chemistry question. Students needed to be able to identify and draw organic compounds, name isomers and know specific organic reaction types.
Question 9 was a chemical equilibrium question using the toxic phosgene gas, that was used in World War 1 as a chemical weapon. While the definition of Le Chatelier’s Principle was absent, it’s application was present in the question.
Question 10 had more organic chemistry and atomic theory within the three parts. With the atomic theory part broken down in to 5 clear, unambiguous parts.
Question 11 featured bonding and shapes, along with acids and bases. This also involved a graph, where students had to use the graph to identify which of two acids were used in the reaction.