Gases all around: breath and balloons

The 15 questions of lesson 20 «Gases all around: breath and balloons» of the chemistry course of Mova's primary school with their options, 83 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/20-gases-all-around-breath-and-balloons/