Tarnish and how metals change

The 14 questions of lesson 14 «Tarnish and how metals change» of the chemistry course of Mova's primary school with their options, 78 sentences, every one parsed by Mova with its syntax tree and pragmatics. How the student did on them: the lesson at school.

This page in Markdown → https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/14-tarnish-and-how-metals-change/