---
title: No atom is lost in a reaction; the atoms are only rearranged, so a r… — Molecules: when atoms join up · tree and pragmatics
description: No atom is lost in a reaction; the atoms are only rearranged, so a rusty nail actually weighs more than the clean one, because it has gained oxygen from the air. Who acts: rusty nail, nail. A sentence of the lesson «Molecules: when atoms join up» of the chemistry course of Mova's primary school with
---

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# Molecules: when atoms join up, sentence 4

<!-- .ven lang=en -->
No atom is lost in a reaction; the atoms are only rearranged, so a rusty nail actually weighs more than the clean one, because it has gained oxygen from the air.

<!-- .vintro -->
**Who acts:** rusty nail, nail · **What happens:** lose, rearrange, weigh, gain · **To what, where:** atom, reaction, atoms, more, oxygen, air

<!-- .vabout -->
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 (rusty nail, nail), 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:4
# text = No atom is lost in a reaction; the atoms are only rearranged, so a rusty nail actually weighs more than the clean one, because it has gained oxygen from the air.
# 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): R5-strong ×1, R7-rel-agree ×1
1	No	no	DET	DT	PronType=Neg	2	det	_	_
2	atom	atom	NOUN	NN	Number=Sing	4	nsubj:pass	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	aux:pass	_	_
4	lost	lose	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
5	in	in	ADP	IN	_	7	case	_	_
6	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
7	reaction	reaction	NOUN	NN	Number=Sing	4	obl	_	_
8	;	;	PUNCT	:	_	13	punct	_	_
9	the	the	DET	DT	Definite=Def|PronType=Art	10	det	_	_
10	atoms	atom	NOUN	NNS	Number=Plur	13	nsubj:pass	_	_
11	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	13	aux:pass	_	_
12	only	only	ADV	RB	_	13	advmod	_	_
13	rearranged	rearrange	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	4	parataxis	_	Agree=R7-rel-agree|Haiku=4:conj
14	,	,	PUNCT	,	_	21	punct	_	_
15	so	so	ADV	RB	_	20	advmod	_	_
16	a	a	DET	DT	Definite=Ind|PronType=Art	18	det	_	_
17	rusty	rusty	ADJ	JJ	Degree=Pos	18	amod	_	_
18	nail	nail	NOUN	NN	Number=Sing	20	nsubj	_	_
19	actually	actually	ADV	RB	_	20	advmod	_	_
20	weighs	weigh	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	conj	_	_
21	more	more	ADJ	JJR	Degree=Cmp	20	obj	_	_
22	than	than	ADP	IN	_	25	case	_	_
23	the	the	DET	DT	Definite=Def|PronType=Art	25	det	_	_
24	clean	clean	ADJ	JJ	Degree=Pos	25	amod	_	_
25	one	one	NOUN	NN	Number=Sing	21	obl	_	Agree=R5-strong|Haiku=20:obl
26	,	,	PUNCT	,	_	30	punct	_	_
27	because	because	SCONJ	IN	_	30	mark	_	_
28	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	30	nsubj	_	_
29	has	have	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	30	aux	_	_
30	gained	gain	VERB	VBN	Tense=Past|VerbForm=Part	20	advcl	_	_
31	oxygen	oxygen	NOUN	NN	Number=Sing	30	obj	_	_
32	from	from	ADP	IN	_	34	case	_	_
33	the	the	DET	DT	Definite=Def|PronType=Art	34	det	_	_
34	air	air	NOUN	NN	Number=Sing	30	obl	_	_
35	.	.	PUNCT	.	_	4	punct	_	_
```

## Pragmatics {#pragmatics}

<!-- sa -->
- form: statement
- act: assert
- voice: narrator
- polarity: none
- teacher: kept the draft

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **lose** | present · passive |  | no atom |  | a reaction |  |  | vn succeed-74-3-1 «NP V NP»: subject=Eventuality |
| 2 | **rearrange** | present · passive |  | the atoms |  |  |  |  | vn create-26.4 «NP V NP»: subject=Result |
| 3 | **weigh** | present | a rusty nail | more |  |  |  | actually *property* | vn register-54.1-2-1 «NP V NP.value»: agent=Theme more=Value |
| 4 | **gain** | present · perfect | nail | oxygen |  | the air |  |  | vn get-13.5.1-1 «NP V NP PP.source»: agent=Agent oxygen=Theme from air=Source |

<!-- .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: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): R5-strong ×1, R7-rel-agree ×1. **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/).

<!-- /div -->

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