---
title: "rusty nail weighs more?? rubbish, rust is crumbly" Is the claim rig… — Molecules: when atoms join up · tree and pragmatics
description: "rusty nail weighs more?? rubbish, rust is crumbly" Is the claim right? Test 9 · ★ of lesson 3 «Molecules: when atoms join up» 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 wrong.
---

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# Test 9 · ★ · Molecules: when atoms join up

<!-- .ven lang=en -->
"rusty nail weighs more?? rubbish, rust is crumbly" Is the claim right?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 3 · wrong ✗ · **Who acts:** rusty nail, rust · **What happens:** weigh, be · **To what, where:** claim · **Speech:** someone speaks here

<!-- .vabout -->
This is test 9 · ★ of lesson 3 «Molecules: when atoms join up» 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/3-molecules-when-atoms-join-up/#t9).

## The question {#question}

```conllu
# sent_id = question:chemistry:3-molecules-when-atoms-join-up:t9:1
# text = "rusty nail weighs more?? rubbish, rust is crumbly" Is the claim right?
1	"	"	PUNCT	``	_	4	punct	_	SpaceAfter=No
2	rusty	rusty	ADJ	JJ	Degree=Pos	3	amod	_	_
3	nail	nail	NOUN	NN	Number=Sing	4	nsubj	_	_
4	weighs	weigh	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	more	more	ADV	RBR	Degree=Cmp	6	advmod	_	SpaceAfter=No
6	??	??	ADJ	JJ	Degree=Pos	7	amod	_	_
7	rubbish	rubbish	NOUN	NN	Number=Sing	15	nsubj	_	SpaceAfter=No
8	,	,	PUNCT	,	_	11	punct	_	_
9	rust	rust	NOUN	NN	Number=Sing	11	nsubj	_	_
10	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	11	cop	_	_
11	crumbly	crumbly	ADJ	JJ	Degree=Pos	7	appos	_	SpaceAfter=No
12	"	"	PUNCT	''	_	11	punct	_	_
13	Is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	15	cop	_	_
14	the	the	DET	DT	Definite=Def|PronType=Art	15	det	_	_
15	claim	claim	NOUN	NN	Number=Sing	4	ccomp	_	_
16	right	right	ADV	RB	_	4	advmod	_	SpaceAfter=No
17	?	?	PUNCT	.	_	4	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **weigh** *in a quote* | present | rusty nail |  |  |  |  | right *property* | vn register-54.1-2-1 «NP V NP.value»: agent=Theme |
| 2 | **is** *in a quote* | present | rust |  |  |  |  | crumbly *property* | tree rules |
| 3 | **be** *speech: other* | present |  | the claim |  |  |  |  | tree rules |

<!-- .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 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
No, rust always weighs less, because bits of it crumble off

```conllu
# sent_id = question:chemistry:3-molecules-when-atoms-join-up:t9:o1:1
# text = No, rust always weighs less, because bits of it crumble off
1	No	no	INTJ	UH	Polarity=Neg	3	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	rust	rust	NOUN	NN	Number=Sing	5	nsubj	_	_
4	always	always	ADV	RB	PronType=Tot	5	advmod	_	_
5	weighs	weigh	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	less	less	ADV	RBR	Degree=Cmp	5	advmod	_	SpaceAfter=No
7	,	,	PUNCT	,	_	12	punct	_	_
8	because	because	SCONJ	IN	_	12	mark	_	_
9	bits	bit	NOUN	NNS	Number=Plur	12	nsubj	_	_
10	of	of	ADP	IN	_	11	case	_	_
11	it	it	PRON	PRP	Case=Acc|Gender=Neut|Number=Sing|Person=3|PronType=Prs	9	nmod	_	_
12	crumble	crumble	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	5	conj	_	_
13	off	off	ADP	RP	_	12	compound:prt	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **weigh** | present | rust |  |  |  |  | always, less *property* | vn register-54.1-2-1 «NP V NP.value»: agent=Theme |
| 2 | **crumble off** | present | bits of rust |  |  |  |  |  | vn break-45.1 «NP.patient V»: agent=Patient |

### Option 2 {#o2}

<!-- .ven lang=en -->
No, rust weighs nothing

```conllu
# sent_id = question:chemistry:3-molecules-when-atoms-join-up:t9:o2:1
# text = No, rust weighs nothing
1	No	no	INTJ	UH	Polarity=Neg	3	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	rust	rust	NOUN	NN	Number=Sing	4	nsubj	_	_
4	weighs	weigh	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
5	nothing	nothing	PRON	NN	Number=Sing|PronType=Neg	4	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **weigh** | present | rust | nothing |  |  |  |  | vn register-54.1-2-1 «NP V NP.value»: agent=Theme nothing=Value |

### Option 3 · ✓ the right answer {#o3}

<!-- .ven lang=en -->
Yes, the rust has extra oxygen atoms from the air

```conllu
# sent_id = question:chemistry:3-molecules-when-atoms-join-up:t9:o3:1
# text = Yes, the rust has extra oxygen atoms from the air
1	Yes	yes	INTJ	UH	Polarity=Pos	5	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	the	the	DET	DT	Definite=Def|PronType=Art	4	det	_	_
4	rust	rust	NOUN	NN	Number=Sing	5	nsubj	_	_
5	has	have	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	extra	extra	ADJ	JJ	Degree=Pos	8	amod	_	_
7	oxygen	oxygen	NOUN	NN	Number=Sing	8	compound	_	_
8	atoms	atom	NOUN	NNS	Number=Plur	5	obj	_	_
9	from	from	ADP	IN	_	11	case	_	_
10	the	the	DET	DT	Definite=Def|PronType=Art	11	det	_	_
11	air	air	NOUN	NN	Number=Sing	8	nmod	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **have** | present | the rust | extra oxygen atoms |  | the air |  |  | vn birth-28.2-1 «NP V NP»: agent=Agent atom=Patient |

### Option 4 {#o4}

<!-- .ven lang=en -->
Yes, because water makes nails grow

```conllu
# sent_id = question:chemistry:3-molecules-when-atoms-join-up:t9:o4:1
# text = Yes, because water makes nails grow
1	Yes	yes	INTJ	UH	Polarity=Pos	5	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	5	punct	_	_
3	because	because	SCONJ	IN	_	5	mark	_	_
4	water	water	NOUN	NN	Number=Sing	5	nsubj	_	_
5	makes	make	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
6	nails	nail	NOUN	NNS	Number=Plur	5	obj	_	_
7	grow	grow	VERB	VB	VerbForm=Inf	5	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **make** | present | water | nails |  |  |  |  | tree rules |
| 2 | **grow** | infinitive | nails *not said here* |  |  |  |  |  | vn appear-48.1.1 «NP V»: agent=Theme |

<!-- div src -->

**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.

<!-- /div -->

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