---
title: Why do sugar crystals sometimes appear at the bottom of an old jar o… — Mixing and dissolving · tree and pragmatics
description: Why do sugar crystals sometimes appear at the bottom of an old jar of syrup? Test 8 · ★★ of lesson 6 «Mixing and dissolving» 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 8 · ★★ · Mixing and dissolving

<!-- .ven lang=en -->
Why do sugar crystals sometimes appear at the bottom of an old jar of syrup?

<!-- .vintro -->
**Mova's choice:** option 4 · **The right answer:** option 3 · wrong ✗ · **Who acts:** sugar crystals · **What happens:** appear · **To what, where:** bottom

<!-- .vabout -->
This is test 8 · ★★ of lesson 6 «Mixing and dissolving» 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/6-mixing-and-dissolving/#t8).

## The question {#question}

```conllu
# sent_id = question:chemistry:6-mixing-and-dissolving:t8:1
# text = Why do sugar crystals sometimes appear at the bottom of an old jar of syrup?
1	Why	why	ADV	WRB	PronType=Int	6	advmod	_	_
2	do	do	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	6	aux	_	_
3	sugar	sugar	NOUN	NN	Number=Sing	4	compound	_	_
4	crystals	crystal	NOUN	NNS	Number=Plur	6	nsubj	_	_
5	sometimes	sometimes	ADV	RB	PronType=Ind	6	advmod	_	_
6	appear	appear	VERB	VBP	Mood=Ind|Number=Sing|Person=1|Tense=Pres|VerbForm=Fin	0	root	_	_
7	at	at	ADP	IN	_	9	case	_	_
8	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
9	bottom	bottom	NOUN	NN	Number=Sing	6	obl	_	_
10	of	of	ADP	IN	_	13	case	_	_
11	an	a	DET	DT	Definite=Ind|PronType=Art	13	det	_	_
12	old	old	ADJ	JJ	Degree=Pos	13	amod	_	_
13	jar	jar	NOUN	NN	Number=Sing	9	nmod	_	_
14	of	of	ADP	IN	_	15	case	_	_
15	syrup	syrup	NOUN	NN	Number=Sing	13	nmod	_	SpaceAfter=No
16	?	?	PUNCT	.	_	6	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **appear** | present · do-support | sugar crystals |  |  | the bottom of a old jar of syrup |  | sometimes *property* | vn appear-48.1.1 «NP V PP.location»: agent=Theme at bottom=Location |

<!-- .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 -->
Ants carry them in at night

```conllu
# sent_id = question:chemistry:6-mixing-and-dissolving:t8:o1:1
# text = Ants carry them in at night
1	Ants	ant	NOUN	NNS	Number=Plur	2	nsubj	_	_
2	carry	carry	VERB	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	them	they	PRON	PRP	Case=Acc|Number=Plur|Person=3|PronType=Prs	2	obj	_	_
4	in	in	ADP	RP	_	2	compound:prt	_	_
5	at	at	ADP	IN	_	6	case	_	_
6	night	night	NOUN	NN	Number=Sing	2	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **carry in** | present | Ants | them *= they* |  |  | night |  | vn carry-11.4 «NP V NP»: agent=Agent they=Theme |

### Option 2 {#o2}

<!-- .ven lang=en -->
Syrup slowly turns into salt over time

```conllu
# sent_id = question:chemistry:6-mixing-and-dissolving:t8:o2:1
# text = Syrup slowly turns into salt over time
1	Syrup	syrup	NOUN	NN	Number=Sing	3	nsubj	_	_
2	slowly	slowly	ADV	RB	_	3	advmod	_	_
3	turns	turn	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	into	into	ADP	IN	_	5	case	_	_
5	salt	salt	NOUN	NN	Number=Sing	3	obl	_	_
6	over	over	ADP	IN	_	7	case	_	_
7	time	time	NOUN	NN	Number=Sing	3	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **turn** | present | Syrup |  |  | salt | time | slowly *property* | vn roll-51.3.1 «NP V PP.trajectory»: agent=Theme into salt=Trajectory |

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

<!-- .ven lang=en -->
It holds more sugar than it can keep dissolved as it cools

```conllu
# sent_id = question:chemistry:6-mixing-and-dissolving:t8:o3:1
# text = It holds more sugar than it can keep dissolved as it cools
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	2	nsubj	_	_
2	holds	hold	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
3	more	more	ADJ	JJR	Degree=Cmp	4	amod	_	_
4	sugar	sugar	NOUN	NN	Number=Sing	2	obj	_	_
5	than	than	SCONJ	IN	_	8	mark	_	_
6	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	8	nsubj	_	_
7	can	can	AUX	MD	VerbForm=Fin	8	aux	_	_
8	keep	keep	VERB	VB	VerbForm=Inf	2	advcl	_	_
9	dissolved	dissolve	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	8	xcomp	_	_
10	as	as	SCONJ	IN	_	12	mark	_	_
11	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	12	nsubj	_	_
12	cools	cool	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	9	advcl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **hold** | present | It | more sugar |  |  |  |  | vn keep-15.2 «NP V NP»: agent=Agent sugar=Theme |
| 2 | **keep** | can | sugar |  |  |  |  |  | tree rules |
| 3 | **dissolve** | participle | sugar *not said here* |  |  |  |  |  | vn break-45.1 «NP.patient V»: agent=Patient |
| 4 | **cool** | present | sugar |  |  |  |  |  | vn other\_cos-45.4 «NP.patient V»: agent=Patient |

### Option 4 · ← Mova's choice {#o4}

<!-- .ven lang=en -->
The glass grows crystals

```conllu
# sent_id = question:chemistry:6-mixing-and-dissolving:t8:o4:1
# text = The glass grows crystals
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	glass	glass	NOUN	NN	Number=Sing	3	nsubj	_	_
3	grows	grow	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	crystals	crystal	NOUN	NNS	Number=Plur	3	obj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **grow** | present | the glass | crystals |  |  |  |  | vn appear-48.1.1 «PP.location V NP»: agent=Location crystal=Theme |

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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: [Mixing and dissolving, test 7](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/6-mixing-and-dissolving/t7/)
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