The second exam paper, GCSE Chemistry (Gateway Science) Foundation Tier Paper 2, covers topics such as rusting, electrolysis, fractional distillation, DNA structure, flame tests, and polymerisation. It includes questions on reaction types, rates, and the periodic table. Students are assessed on practical applications like titrations and energy efficiency in recycling. Concepts like cracking, combustion, and atmospheric changes are explored alongside calculations for atom economy and yield. Experimental setups, scientific reasoning, and data interpretation are integral, emphasizing chemical processes, material properties, and sustainability practices.