---
title: Is boiling water a reversible change? — Changes you can undo and changes you c… · tree and pragmatics
description: Is boiling water a reversible change? Test 10 · ★ of lesson 9 «Changes you can undo and changes you can't» of the chemistry course of Mova's primary school, with the dependency tree and pragmatics of the question and of each option; Mova's choice was right.
---

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# Test 10 · ★ · Changes you can undo and changes you can't

<!-- .ven lang=en -->
Is boiling water a reversible change?

<!-- .vintro -->
**Mova's choice:** option 2 · **The right answer:** option 2 · right ✓ · **What happens:** boil

<!-- .vabout -->
This is test 10 · ★ of lesson 9 «Changes you can undo and changes you can't» of the chemistry course of Mova's primary school. The page gives the question's syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause, then the 4 options as the student saw them, each with its tree and pragmatics. Every text is parsed by Mova itself. How the student answered it, with the score of every option and why: [the test at school](https://md.mova.elamur.ai/free/en/school-run/chemistry/9-changes-you-can-and-cannot-undo/#t10).

## The question {#question}

```conllu
# sent_id = question:chemistry:9-changes-you-can-and-cannot-undo:t10:1
# text = Is boiling water a reversible change?
1	Is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	2	aux	_	_
2	boiling	boil	VERB	VBG	VerbForm=Ger	3	amod	_	_
3	water	water	NOUN	NN	Number=Sing	6	nsubj	_	_
4	a	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
5	reversible	reversible	ADJ	JJ	Degree=Pos	6	amod	_	_
6	change	change	NOUN	NN	Number=Sing	0	root	_	SpaceAfter=No
7	?	?	PUNCT	.	_	6	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **boil** | present · progressive |  |  |  |  |  |  | vn cooking-45.3 «NP.patient V»: agent=Patient |

<!-- .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.

## The options {#options}

### Option 1 {#o1}

<!-- .ven lang=en -->
No, steam is a totally new substance

```conllu
# sent_id = question:chemistry:9-changes-you-can-and-cannot-undo:t10:o1:1
# text = No, steam is a totally new substance
1	No	no	INTJ	UH	Polarity=Neg	8	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	steam	steam	NOUN	NN	Number=Sing	8	nsubj	_	_
4	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	cop	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
6	totally	totally	ADV	RB	_	7	advmod	_	_
7	new	new	ADJ	JJ	Degree=Pos	8	amod	_	_
8	substance	substance	NOUN	NN	Number=Sing	0	root	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | steam | a new substance |  |  |  |  | tree rules |

### Option 2 · ← Mova's choice · ✓ the right answer {#o2}

<!-- .ven lang=en -->
Yes, steam condenses back to water

```conllu
# sent_id = question:chemistry:9-changes-you-can-and-cannot-undo:t10:o2:1
# text = Yes, steam condenses back to water
1	Yes	yes	INTJ	UH	Polarity=Pos	4	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	steam	steam	NOUN	NN	Number=Sing	4	nsubj	_	_
4	condenses	condense	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	back	back	ADV	RB	_	4	advmod	_	_
6	to	to	ADP	IN	_	7	case	_	_
7	water	water	NOUN	NN	Number=Sing	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **condense back** | present | steam |  |  |  |  | to water | vn other\_cos-45.4 «NP.patient V»: agent=Patient |

### Option 3 {#o3}

<!-- .ven lang=en -->
Only high up on a tall mountain top

```conllu
# sent_id = question:chemistry:9-changes-you-can-and-cannot-undo:t10:o3:1
# text = Only high up on a tall mountain top
1	Only	only	ADV	RB	_	3	advmod	_	_
2	high	high	ADV	RB	Degree=Pos	3	advmod	_	_
3	up	up	ADV	RB	_	0	root	_	_
4	on	on	ADP	IN	_	8	case	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
6	tall	tall	ADJ	JJ	Degree=Pos	8	amod	_	_
7	mountain	mountain	NOUN	NN	Number=Sing	8	compound	_	_
8	top	top	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .note -->
The frames reader finds no event or fact in this sentence.

### Option 4 {#o4}

<!-- .ven lang=en -->
No, boiling destroys the water for good, so it is gone

```conllu
# sent_id = question:chemistry:9-changes-you-can-and-cannot-undo:t10:o4:1
# text = No, boiling destroys the water for good, so it is gone
1	No	no	INTJ	UH	Polarity=Neg	4	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	boiling	boiling	NOUN	NN	Number=Sing	4	nsubj	_	_
4	destroys	destroy	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	the	the	DET	DT	Definite=Def|PronType=Art	6	det	_	_
6	water	water	NOUN	NN	Number=Sing	4	obj	_	_
7	for	for	ADP	IN	_	8	case	_	_
8	good	good	ADJ	JJ	Degree=Pos	4	obl	_	SpaceAfter=No
9	,	,	PUNCT	,	_	13	punct	_	_
10	so	so	ADV	RB	_	13	advmod	_	_
11	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	13	nsubj	_	_
12	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	13	cop	_	_
13	gone	gone	ADJ	JJ	Degree=Pos	4	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **destroy** | present | boiling | the water |  |  |  | for good | vn destroy-44 «NP V NP»: agent=Agent water=Patient |
| 2 | **is** | present | boiling |  |  |  |  | gone *property* | tree rules |

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**Text:** the tests of Mova's primary school, written for Mova (`world/data/school/`), as the course runner gave them to the student. **Trees:** Mova's own parse — the `en` model on the CPU, when the site is built — not checked by a teacher; they may be wrong. **Frames:** Mova's frames reader (`prag`), each text read on its own. Elamur Cosmic License.

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- ← previous: [Changes you can undo and changes you c…, test 9](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/9-changes-you-can-and-cannot-undo/t9/)
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