Pearson Edexcel International A Level Chemistry Student Cracked __link__ -

– Assesses your knowledge of laboratory techniques, safety, data analysis, and qualitative observations based on AS core practicals. The A2 Level Units

That was the key. The examiners didn't want him to regurgitate that entropy increases with temperature. They wanted him to see a weird enthalpy cycle for a made-up compound and build the solution from first principles . They wanted him to see a weird enthalpy

The students who get an A* (the "cracked" ones) are not geniuses. They are just disciplined. They do the past papers. They learn the mark scheme. They redraw the mechanisms until their hand hurts. They do the past papers

Know how to draw experimental setups properly, including reflux, distillation, and gas collection apparatus. They wanted him to see a weird enthalpy

Know why a volumetric pipette is preferred over a measuring cylinder for measuring the primary standard solution (it has a significantly lower percentage uncertainty). Final Verdict

He underlined explain in the question. The examiner's reports had taught him that. State = one sentence. Describe = bullet points. Explain = cause and effect. Evaluate = pros and cons.