IGCSE Science - Combined (0653) — May–June 2023, Paper 52
4 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →You are going to investigate okra, a fruit which contains many seeds; you are provided with a section of okra on a white tile. In the box provided, draw a large, clear pencil…
Answer this question and get it marked →The enzyme amylase breaks down starch to form a reducing sugar. Plan an investigation to determine the relationship between temperature and the time taken to completely break down…
Answer this question and get it marked →You are going to investigate a white solid H. Procedure: measure the mass of the clean dry test-tube labelled H and record in Table 3.1; place two spatula loads of solid H into…
Answer this question and get it marked →You are going to measure the focal length F of a convex lens. Arrange the equipment as in Fig. 4.1 (illuminated triangular object at 0 cm, lens at distance u, screen at distance…
Answer this question and get it marked →