IGCSE Science - Combined (0653) — May–June 2025, Paper 51
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 the nutrient content of three drinks, A, B and C. Procedure step 1 Add approximately 3 cm^3 of drink A to a clean test-tube. step 2 Add a few drops of…
Answer this question and get it marked →Invertase is an enzyme. Invertase breaks down the non-reducing sugar sucrose into reducing sugars. non-reducing sugar sucrose --[invertase]-- reducing sugars Benedict's solution…
Answer this question and get it marked →You are going to investigate aqueous H. Investigating the rate of reaction of aqueous H with magnesium. Procedure step 1 Measure 25 cm^3 of aqueous H using a measuring cylinder.…
Answer this question and get it marked →You are going to determine the period T of a pendulum. The apparatus shown in Fig. 4.1 has been set up for you. Fig. 4.1 shows a pendulum hanging from a clamp on a stand resting…
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