---
title: When water freezes its molecules spread out into an open pattern, so… — Water: the most amazing liquid · tree and pragmatics
description: When water freezes its molecules spread out into an open pattern, so ice is lighter than the same amount of liquid water. Who acts: water, molecules, ice. A sentence of the lesson «Water: the most amazing liquid» of the chemistry course of Mova's primary school with its dependency tree and the pragm
---

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# Water: the most amazing liquid, sentence 4

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When water freezes its molecules spread out into an open pattern, so ice is lighter than the same amount of liquid water.

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**Who acts:** water, molecules, ice · **What happens:** freeze, spread out, be, amount · **To what, where:** open pattern, liquid water

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This is a sentence of the lesson «Water: the most amazing liquid» of the chemistry course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (water, molecules, ice), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:chemistry:034-water-amazing-liquid.lesson:4
# text = When water freezes its molecules spread out into an open pattern, so ice is lighter than the same amount of liquid water.
# source = school lesson (ours)
# course = chemistry
# lesson = 034-water-amazing-liquid.lesson
# annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): no change
1	When	when	SCONJ	WRB	_	3	mark	_	_
2	water	water	NOUN	NN	Number=Sing	3	nsubj	_	_
3	freezes	freeze	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	6	advcl	_	_
4	its	its	PRON	PRP$	Case=Gen|Gender=Neut|Number=Sing|Person=3|Poss=Yes|PronType=Prs	5	nmod:poss	_	_
5	molecules	molecule	NOUN	NNS	Number=Plur	6	nsubj	_	_
6	spread	spread	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
7	out	out	ADV	RB	_	6	advmod	_	_
8	into	into	ADP	IN	_	11	case	_	_
9	an	a	DET	DT	Definite=Ind|PronType=Art	11	det	_	_
10	open	open	ADJ	JJ	Degree=Pos	11	amod	_	_
11	pattern	pattern	NOUN	NN	Number=Sing	6	obl	_	_
12	,	,	PUNCT	,	_	16	punct	_	_
13	so	so	ADV	RB	_	16	advmod	_	_
14	ice	ice	NOUN	NN	Number=Sing	16	nsubj	_	_
15	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	16	cop	_	_
16	lighter	light	ADJ	JJR	Degree=Cmp	6	parataxis	_	_
17	than	than	ADP	IN	_	20	case	_	_
18	the	the	DET	DT	Definite=Def|PronType=Art	20	det	_	_
19	same	same	ADJ	JJ	Degree=Pos	20	amod	_	_
20	amount	amount	NOUN	NN	Number=Sing	16	obl	_	_
21	of	of	ADP	IN	_	23	case	_	_
22	liquid	liquid	ADJ	JJ	Degree=Pos	23	amod	_	_
23	water	water	NOUN	NN	Number=Sing	20	nmod	_	_
24	.	.	PUNCT	.	_	6	punct	_	_
```

## Pragmatics {#pragmatics}

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No stored speech act for this sentence.

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| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **freeze** | present | water |  |  |  |  |  | vn other\_cos-45.4-1 «NP.patient V»: agent=Patient |
| 2 | **spread out** | present | Water's molecules |  |  | a open pattern |  | out *property* | vn spray-9.7-1 «NP V PP.destination»: agent=Theme into pattern=Destination |
| 3 | **is** | present | ice |  |  |  |  | than the same amount of liquid water; light *property* | tree rules |
| 4 | **amount** |  |  | liquid water |  |  |  |  | nom amount «possession transitive»: of=patient |

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One row per clause the reader finds. «not said here»: a role filled from the clause above. «roles by»: a VerbNet class and frame when one fits the verb, else the reader's rules on the tree.

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**Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:chemistry:034-water-amazing-liquid.lesson:4`.

**The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): no change. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence.

See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/).

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