---
title: Atoms rarely stay alone: they join up into groups called molecules,… — Molecules: when atoms join up · tree and pragmatics
description: Atoms rarely stay alone: they join up into groups called molecules, a bit like Lego bricks clicking together. Who acts: Atoms, groups, Lego bricks. A sentence of the lesson «Molecules: when atoms join up» of the chemistry course of Mova's primary school with its dependency tree and the pragmatics of
---

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# Molecules: when atoms join up, sentence 0

<!-- .ven lang=en -->
Atoms rarely stay alone: they join up into groups called molecules, a bit like Lego bricks clicking together.

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**Who acts:** Atoms, groups, Lego bricks · **What happens:** stay, join up, call, click · **To what, where:** bit, molecules · **Speech:** someone speaks here

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This is a sentence of the lesson «Molecules: when atoms join up» 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 (Atoms, groups, Lego bricks), what happens, when and where, as Mova's frames read it from the tree.

## The tree {#tree}

```conllu
# sent_id = school:chemistry:003-molecules-when-atoms-join-up.lesson:0
# text = Atoms rarely stay alone: they join up into groups called molecules, a bit like Lego bricks clicking together.
# source = school lesson (ours)
# course = chemistry
# lesson = 003-molecules-when-atoms-join-up.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): R7-rel-agree ×2
1	Atoms	atom	NOUN	NNS	Number=Plur	3	nsubj	_	_
2	rarely	rarely	ADV	RB	_	3	advmod	_	_
3	stay	stay	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	alone	alone	ADV	RB	_	3	advmod	_	_
5	:	:	PUNCT	:	_	7	punct	_	_
6	they	they	PRON	PRP	Case=Nom|Number=Plur|Person=3|PronType=Prs	7	nsubj	_	_
7	join	join	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	3	parataxis	_	Agree=R7-rel-agree|Haiku=3:conj
8	up	up	ADP	RP	_	7	compound:prt	_	Agree=R7-rel-agree|Haiku=7:advmod|HaikuPos=ADV:RB:_
9	into	into	ADP	IN	_	10	case	_	_
10	groups	group	NOUN	NNS	Number=Plur	7	obl	_	_
11	called	call	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	10	acl	_	_
12	molecules	molecule	NOUN	NNS	Number=Plur	11	xcomp	_	_
13	,	,	PUNCT	,	_	15	punct	_	_
14	a	a	DET	DT	Definite=Ind|PronType=Art	15	det	_	_
15	bit	bit	NOUN	NN	Number=Sing	3	obl:unmarked	_	_
16	like	like	ADP	IN	_	18	case	_	_
17	Lego	Lego	PROPN	NNP	Number=Sing	18	compound	_	_
18	bricks	brick	NOUN	NNS	Number=Plur	15	nmod	_	_
19	clicking	click	VERB	VBG	VerbForm=Ger	18	acl	_	_
20	together	together	ADV	RB	_	19	advmod	_	_
21	.	.	PUNCT	.	_	3	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- .note -->
No stored speech act for this sentence.

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **stay** | present | Atoms | a bit like Lego bricks |  |  |  | alone, rarely *property* | vn exist-47.1 «NP V»: agent=Theme |
| 2 | **join up** | present | Atoms *= atom* |  |  |  |  | into groups | vn mix-22.1-2-1 «NP V PP.patient»: agent=Patient into group=Co-Patient |
| 3 | **call** | participle | groups *not said here* | molecules |  |  |  |  | vn initiate\_communication-37.4.2-1 «NP V»: agent=Agent |
| 4 | **click** | gerund | Lego bricks *not said here* |  |  |  |  | together *property* | vn sound\_emission-43.2 «NP V»: agent=Theme |

<!-- .note -->
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:003-molecules-when-atoms-join-up.lesson:0`.

**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): R7-rel-agree ×2. **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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