Igcse Model Questions Vol1 2025 Chemistry Question 1
Practice practical question 1 from the 2025 Igcse Model Questions Vol1 Chemistry examination. This question covers Atomic Structure .
A student carries out the following experiment to determine the relative atomic mass of magnesium (Mg). A clean crucible with lid is weighed and the mass recorded as 15.842 g. An excess of magnesium ribbon is placed in the crucible and the crucible is re‑weighed. After heating the crucible strongly for 5 min the lid is replaced and the crucible is cooled in a desiccator and weighed again. The experiment is repeated a second time with a fresh crucible. The data obtained are shown in the table below. | Trial | Mass of empty crucible (g) | Mass of crucible + Mg before heating (g) | Mass of crucible + MgO after heating (g) | |-------|----------------------------|------------------------------------------|-------------------------------------------| | 1 | 15.842 | 18.376 | 19.621 | | 2 | 15.830 | 18.363 | 19.608 | Using the data, answer the following questions:
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This is Igcse Model Questions Vol1 2025 Chemistry Question 1. It is one of the practical questions from the 2025 Igcse Model Questions Vol1 Chemistry examination.
The question covers Atomic Structure .
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