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title: Mixtures and how to separate them — a lesson of Mova's school · trees and pragmatics
description: «Mixtures and how to separate them», a lesson of the world course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: A mixture is two or more substances mixed together without becoming a new substance; each keeps its own properties, so we can separate the
---

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# Mixtures and how to separate them

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Lesson 19 of the world course of Mova's primary school: 13 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0). How Mova does on its tests: [the lesson at school](https://md.mova.elamur.ai/free/en/school-run/world/19-mixtures-and-separating/).

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- [0](https://md.mova.elamur.ai/free/en/corpora/school/world/19-mixtures-and-separating/0/) — A mixture is two or more substances mixed together without becoming a new substance; each keeps its own properties, so we can separate them again.
- [1](https://md.mova.elamur.ai/free/en/corpora/school/world/19-mixtures-and-separating/1/) — Sieving separates pieces of different sizes: small bits fall through the holes and big ones stay behind.
- [2](https://md.mova.elamur.ai/free/en/corpora/school/world/19-mixtures-and-separating/2/) — Filtering separates an undissolved solid from a liquid: the liquid passes through the tiny holes in filter paper or cloth, and the solid stays on it.
- [6](https://md.mova.elamur.ai/free/en/corpora/school/world/19-mixtures-and-separating/6/) — In a mixture each substance keeps its own properties.
- [7](https://md.mova.elamur.ai/free/en/corpora/school/world/19-mixtures-and-separating/7/) — A sieve separates solids of different sizes.
- [8](https://md.mova.elamur.ai/free/en/corpora/school/world/19-mixtures-and-separating/8/) — A filter separates an undissolved solid from a liquid.
- [9](https://md.mova.elamur.ai/free/en/corpora/school/world/19-mixtures-and-separating/9/) — Filtering cannot remove dissolved salt or sugar, because the dissolved particles pass through the filter.
- [10](https://md.mova.elamur.ai/free/en/corpora/school/world/19-mixtures-and-separating/10/) — Evaporation leaves a dissolved solid behind.
- [11](https://md.mova.elamur.ai/free/en/corpora/school/world/19-mixtures-and-separating/11/) — A magnet separates iron and steel from other materials.
- [12](https://md.mova.elamur.ai/free/en/corpora/school/world/19-mixtures-and-separating/12/) — Oil and water do not mix; oil floats on top.
- [13](https://md.mova.elamur.ai/free/en/corpora/school/world/19-mixtures-and-separating/13/) — Heavy solid bits settle to the bottom of still water, so clearer water can be poured off the top.
- [14](https://md.mova.elamur.ai/free/en/corpora/school/world/19-mixtures-and-separating/14/) — To get pure water from salty water, the vapour must be collected and cooled so it condenses; this is called distillation.
- [15](https://md.mova.elamur.ai/free/en/corpora/school/world/19-mixtures-and-separating/15/) — Making a mixture is a change that can be reversed; burning is not.

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