---
title: It is given that a small quantity of common salt is introduced into… — Colours of fire: fireworks · tree and pragmatics
description: It is given that a small quantity of common salt is introduced into a gas flame. Select the observation most consistent with the established facts. Exam question 2 of lesson 26 «Colours of fire: fireworks» of the chemistry course of Mova's primary school, with the dependency tree and pragmatics of t
---

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# Exam question 2 · Colours of fire: fireworks

<!-- .ven lang=en -->
It is given that a small quantity of common salt is introduced into a gas flame. Select the observation most consistent with the established facts.

<!-- .vintro -->
**Mova's choice:** option 4 · **The right answer:** option 4 · right ✓ · **Who acts:** you · **What happens:** give, introduce, select, establish · **To what, where:** It, small quantity, gas flame, observation

<!-- .vabout -->
This is exam question 2 of lesson 26 «Colours of fire: fireworks» of the chemistry course of Mova's primary school, asked in stiff, formal language. 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/26-colours-of-fire-fireworks/#e2).

## The question {#question}

<!-- .note -->
*Sentence 1:* It is given that a small quantity of common salt is introduced into a gas flame.

```conllu
# sent_id = question:chemistry:26-colours-of-fire-fireworks:e2:1
# text = It is given that a small quantity of common salt is introduced into a gas flame.
1	It	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	3	nsubj:pass	_	_
2	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	aux:pass	_	_
3	given	give	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	0	root	_	_
4	that	that	SCONJ	IN	_	12	mark	_	_
5	a	a	DET	DT	Definite=Ind|PronType=Art	7	det	_	_
6	small	small	ADJ	JJ	Degree=Pos	7	amod	_	_
7	quantity	quantity	NOUN	NN	Number=Sing	12	nsubj:pass	_	_
8	of	of	ADP	IN	_	10	case	_	_
9	common	common	ADJ	JJ	Degree=Pos	10	amod	_	_
10	salt	salt	NOUN	NN	Number=Sing	7	nmod	_	_
11	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	12	aux:pass	_	_
12	introduced	introduce	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	3	advcl	_	_
13	into	into	ADP	IN	_	16	case	_	_
14	a	a	DET	DT	Definite=Ind|PronType=Art	16	det	_	_
15	gas	gas	NOUN	NN	Number=Sing	16	compound	_	_
16	flame	flame	NOUN	NN	Number=Sing	12	obl	_	SpaceAfter=No
17	.	.	PUNCT	.	_	3	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **give** | present · passive |  | It |  |  |  |  | vn give-13.1-1 «NP V NP»: subject=Theme |
| 2 | **introduce** | present · passive |  | a small quantity of common salt |  | a gas flame |  |  | vn amalgamate-22.2-3-1 «NP V NP»: subject=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.

<!-- .note -->
*Sentence 2:* Select the observation most consistent with the established facts.

```conllu
# sent_id = question:chemistry:26-colours-of-fire-fireworks:e2:2
# text = Select the observation most consistent with the established facts.
1	Select	select	VERB	VB	Mood=Imp|VerbForm=Fin	0	root	_	_
2	the	the	DET	DT	Definite=Def|PronType=Art	3	det	_	_
3	observation	observation	NOUN	NN	Number=Sing	1	obj	_	_
4	most	most	ADV	RBS	Degree=Sup	5	advmod	_	_
5	consistent	consistent	ADJ	JJ	Degree=Pos	1	ccomp	_	_
6	with	with	ADP	IN	_	9	case	_	_
7	the	the	DET	DT	Definite=Def|PronType=Art	9	det	_	_
8	established	establish	VERB	VBN	Tense=Past|VerbForm=Part|Voice=Pass	9	amod	_	_
9	facts	fact	NOUN	NNS	Number=Plur	5	obl	_	SpaceAfter=No
10	.	.	PUNCT	.	_	1	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **select** | imperative | you *not said here* | the observation |  |  |  |  | vn obtain-13.5.2 «NP V NP»: agent=Agent observation=Theme |
| 2 | **establish** | participle |  |  |  |  |  |  | vn indicate-78-1-1 «NP V NP to be NP»: agent=Pivot |

## The options {#options}

### Option 1 {#o1}

<!-- .ven lang=en -->
The flame becomes deep blue

```conllu
# sent_id = question:chemistry:26-colours-of-fire-fireworks:e2:o1:1
# text = The flame becomes deep blue
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	flame	flame	NOUN	NN	Number=Sing	3	nsubj	_	_
3	becomes	become	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	deep	deep	ADJ	JJ	Degree=Pos	5	amod	_	_
5	blue	blue	ADJ	JJ	Degree=Pos	3	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **become** | present | the flame |  |  |  |  | blue *property* | vn become-109.1-1-1 «NP V PP.attribute»: agent=Patient |

### Option 2 {#o2}

<!-- .ven lang=en -->
The flame becomes colourless

```conllu
# sent_id = question:chemistry:26-colours-of-fire-fireworks:e2:o2:1
# text = The flame becomes colourless
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	flame	flame	NOUN	NN	Number=Sing	3	nsubj	_	_
3	becomes	become	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	colourless	colourless	ADJ	JJ	Degree=Pos	3	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **become** | present | the flame |  |  |  |  | colourless *property* | vn become-109.1-1-1 «NP V PP.attribute»: agent=Patient |

### Option 3 {#o3}

<!-- .ven lang=en -->
The flame is extinguished at once

```conllu
# sent_id = question:chemistry:26-colours-of-fire-fireworks:e2:o3:1
# text = The flame is extinguished at once
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	flame	flame	NOUN	NN	Number=Sing	4	nsubj	_	_
3	is	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	4	cop	_	_
4	extinguished	extinguished	ADJ	JJ	Degree=Pos	0	root	_	_
5	at	at	ADP	IN	_	6	case	_	_
6	once	once	ADV	RB	NumForm=Word|NumType=Mult	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** | present | the flame |  |  |  |  | extinguished *property* | tree rules |

### Option 4 · ← Mova's choice · ✓ the right answer {#o4}

<!-- .ven lang=en -->
The flame becomes bright yellow

```conllu
# sent_id = question:chemistry:26-colours-of-fire-fireworks:e2:o4:1
# text = The flame becomes bright yellow
1	The	the	DET	DT	Definite=Def|PronType=Art	2	det	_	_
2	flame	flame	NOUN	NN	Number=Sing	3	nsubj	_	_
3	becomes	become	VERB	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	0	root	_	_
4	bright	bright	ADJ	JJ	Degree=Pos	5	amod	_	_
5	yellow	yellow	ADJ	JJ	Degree=Pos	3	xcomp	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **become** | present | the flame |  |  |  |  | yellow *property* | vn become-109.1-1-1 «NP V PP.attribute»: agent=Patient |

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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.

<!-- /div -->

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- ← previous: [Colours of fire: fireworks, exam 1](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/26-colours-of-fire-fireworks/e1/)
- next →: [Colours of fire: fireworks, exam 3](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/26-colours-of-fire-fireworks/e3/)
- ↑ back to [Colours of fire: fireworks](https://md.mova.elamur.ai/free/en/corpora/questions/chemistry/26-colours-of-fire-fireworks/)