IB Chemistry HL IA Example 2 (20/24)

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This Chemistry HL IA scored 20/24 (Grade 7) and was created by a 44/45 student for the November 2022 session. This IA is up-to-date with the newest 2016 IB Chemistry HL syllabus.

Research Topic: What is the effect of different salinity levels in parts per thousand (ppt) of sodium chloride (NaCl) salt (10.00 ppt, 20.00 ppt, 30.00 ppt, 40.00 ppt, 50.00 ppt) on the dissolved oxygen (DO) content of water in parts per million (ppm), determined using the Winkler Method?

This resource is a perfect exemplar of the Chemistry HL Internal Assessment and can be used as a model for both the structure and the level of analysis required to achieve a strong Grade 7 in this task.

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