IGCSE Sciences - Co-Ordinated (0973) — May–June 2025, Paper 51
6 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Procedure: step 1 Cut one small cube of 5 x 5 x 5 mm from one of the large cubes. step 2 Place the small cube of agar jelly in a clean beaker. step 3 Pour hydrochloric acid into…
Answer this question and get it marked →Procedure: - Stir the suspension of yeast cells with a clean stirring rod. - Pour approximately 1 cm depth of the suspension of yeast cells into a clean test-tube. - Use a syringe…
Answer this question and get it marked →Procedure: - Almost fill a burette with dilute hydrochloric acid. - Record in Table 3.1 in column J this initial burette reading to one decimal place. - Use a measuring cylinder…
Answer this question and get it marked →An iron key is electroplated with copper metal using the apparatus shown in Fig. 4.1. The apparatus is an electrolysis cell: a battery (positive and negative terminals) connected…
Answer this question and get it marked →Procedure: - Use a balance to record the mass m of 5 glass marbles. m = .......................... g - Approximately half-fill a 50 cm^3 measuring cylinder with water. - Record…
Answer this question and get it marked →A pendulum is set up as shown in Fig. 6.1 (a bob hanging on a string from a clamp on a stand; the length l is marked from the bottom of the clamp to the bob). The length l is the…
Answer this question and get it marked →