IGCSE Sciences - Co-Ordinated (0654) — May–June 2023, Paper 53
6 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →You are provided with a flower. Remove three petals from one side of the flower so that the internal structures are clearly visible. In the box, make a large and detailed pencil…
Answer this question and get it marked →You investigate the action of three concentrations of an enzyme on milk protein. Milk looks white (opaque); when the protein is broken down it becomes clear. Add 5 cm3 of 4%…
Answer this question and get it marked →You investigate the rate of reaction between solution H and solution K. When H, K and starch are mixed, a blue-black colour appears after a time. Procedure: add 2 cm3 of solution…
Answer this question and get it marked →You identify solution L. Add about 3 cm depth of solution L into each of four test-tubes and carry out the tests in Table 4.1, recording observations: test-tube 1 – add a few…
Answer this question and get it marked →You measure the density of plasticine by two methods. Method 1: break the plasticine into two pieces of approximately the same size; put one aside for (d). Use the balance to find…
Answer this question and get it marked →Plan an investigation to find out if the material from which a spring is made affects the extension of the spring when it is stretched by a load. You are provided with springs…
Answer this question and get it marked →