IB
IBO
Chemistry
October 2023
QP-202310-Chemistry-P1（TZ2）-HL · Question 6
Question (excerpt):
6. Which one of the following observations provides evidence that matter is composed of atoms? A. The line emission spectra of hydrogen produce four visible lines. B. Sodium chloride is soluble in wat…
6. Which one of the following observations provides evidence that matter is composed of atoms? A. The line emission spectra of hydrogen produce four visible lines. B. Sodium chloride is soluble in wat…
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