---
title: "oven cleaner's an alkali, not an acid, so it's safe on your hands i… — Alkalis and soda, and how they cancel… · tree and pragmatics
description: "oven cleaner's an alkali, not an acid, so it's safe on your hands innit". What's true? Test 5 · ★ of lesson 16 «Alkalis and soda, and how they cancel acids» 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 wa
---

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# Test 5 · ★ · Alkalis and soda, and how they cancel acids

<!-- .ven lang=en -->
"oven cleaner's an alkali, not an acid, so it's safe on your hands innit". What's true?

<!-- .vintro -->
**Mova's choice:** option 1 · **The right answer:** option 3 · wrong ✗ · **Who acts:** acid · **What happens:** be · **To what, where:** hands innit

<!-- .vabout -->
This is test 5 · ★ of lesson 16 «Alkalis and soda, and how they cancel acids» 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/16-alkalis-and-soda/#t5).

## The question {#question}

<!-- .note -->
*Sentence 1:* "oven cleaner's an alkali, not an acid, so it's safe on your hands innit".

```conllu
# sent_id = question:chemistry:16-alkalis-and-soda:t5:1
# text = "oven cleaner's an alkali, not an acid, so it's safe on your hands innit".
1	"	"	PUNCT	``	_	6	punct	_	SpaceAfter=No
2	oven	oven	NOUN	NN	Number=Sing	3	compound	_	_
3	cleaner	cleaner	NOUN	NN	Number=Sing	6	nmod:poss	_	SpaceAfter=No
4	's	's	PART	POS	_	3	case	_	_
5	an	a	DET	DT	Definite=Ind|PronType=Art	6	det	_	_
6	alkali	alkali	NOUN	NN	Number=Sing	0	root	_	SpaceAfter=No
7	,	,	PUNCT	,	_	10	punct	_	_
8	not	not	PART	RB	Polarity=Neg	10	advmod	_	_
9	an	a	DET	DT	Definite=Ind|PronType=Art	10	det	_	_
10	acid	acid	NOUN	NN	Number=Sing	6	appos	_	SpaceAfter=No
11	,	,	PUNCT	,	_	15	punct	_	_
12	so	so	ADV	RB	_	15	advmod	_	_
13	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	15	nsubj	_	SpaceAfter=No
14	's	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	15	cop	_	_
15	safe	safe	ADJ	JJ	Degree=Pos	6	parataxis	_	_
16	on	on	ADP	IN	_	19	case	_	_
17	your	your	PRON	PRP$	Case=Gen|Person=2|Poss=Yes|PronType=Prs	19	nmod:poss	_	_
18	hands	hand	NOUN	NNS	Number=Plur	19	compound	_	_
19	innit	innit	NOUN	NN	Number=Sing	15	obl	_	SpaceAfter=No
20	"	"	PUNCT	''	_	15	punct	_	SpaceAfter=No
21	.	.	PUNCT	.	_	6	punct	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is** *in a quote* | present | acid |  |  | your hands innit |  | safe *property* | 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.

<!-- .note -->
*Sentence 2:* What's true?

```conllu
# sent_id = question:chemistry:16-alkalis-and-soda:t5:2
# text = What's true?
1	What	what	PRON	WP	PronType=Int	3	nsubj	_	SpaceAfter=No
2	's	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	3	cop	_	_
3	true	true	ADJ	JJ	Degree=Pos	0	root	_	SpaceAfter=No
4	?	?	PUNCT	.	_	3	punct	_	_
```

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

## The options {#options}

### Option 1 · ← Mova's choice {#o1}

<!-- .ven lang=en -->
Yes, only acids can ever burn your skin, not alkalis

```conllu
# sent_id = question:chemistry:16-alkalis-and-soda:t5:o1:1
# text = Yes, only acids can ever burn your skin, not alkalis
1	Yes	yes	INTJ	UH	Polarity=Pos	7	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	only	only	ADV	RB	_	4	advmod	_	_
4	acids	acid	NOUN	NNS	Number=Plur	7	nsubj	_	_
5	can	can	AUX	MD	VerbForm=Fin	7	aux	_	_
6	ever	ever	ADV	RB	PronType=Ind	7	advmod	_	_
7	burn	burn	VERB	VB	VerbForm=Inf	0	root	_	_
8	your	your	PRON	PRP$	Case=Gen|Person=2|Poss=Yes|PronType=Prs	9	nmod:poss	_	_
9	skin	skin	NOUN	NN	Number=Sing	7	obj	_	SpaceAfter=No
10	,	,	PUNCT	,	_	12	punct	_	_
11	not	not	PART	RB	Polarity=Neg	12	advmod	_	_
12	alkalis	alkalis	VERB	VB	VerbForm=Inf	7	conj	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **burn** | can | acids | your skin |  |  | ever |  | vn light\_emission-43.1 «NP V NP.theme»: agent=Agent skin=Theme |
| 2 | **not** **alkalis** | infinitive | acids *not said here* |  |  |  |  |  | tree rules |

### Option 2 {#o2}

<!-- .ven lang=en -->
Yes, alkalis are always gentle

```conllu
# sent_id = question:chemistry:16-alkalis-and-soda:t5:o2:1
# text = Yes, alkalis are always gentle
1	Yes	yes	INTJ	UH	Polarity=Pos	6	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	1	punct	_	_
3	alkalis	alkali	NOUN	NNS	Number=Plur	6	nsubj	_	_
4	are	be	AUX	VBP	Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin	6	cop	_	_
5	always	always	ADV	RB	PronType=Tot	6	advmod	_	_
6	gentle	gentle	ADJ	JJ	Degree=Pos	0	root	_	_
```

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

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

<!-- .ven lang=en -->
Strong alkalis can burn worse than some acids

```conllu
# sent_id = question:chemistry:16-alkalis-and-soda:t5:o3:1
# text = Strong alkalis can burn worse than some acids
1	Strong	strong	ADJ	JJ	Degree=Pos	2	amod	_	_
2	alkalis	alkali	NOUN	NNS	Number=Plur	4	nsubj	_	_
3	can	can	AUX	MD	VerbForm=Fin	4	aux	_	_
4	burn	burn	VERB	VB	VerbForm=Inf	0	root	_	_
5	worse	badly	ADV	RBR	Degree=Cmp	4	advmod	_	_
6	than	than	ADP	IN	_	8	case	_	_
7	some	some	DET	DT	PronType=Ind	8	det	_	_
8	acids	acid	NOUN	NNS	Number=Plur	4	obl	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **burn** | can | Strong alkalis |  |  |  |  | than some acids; badly *property* | vn light\_emission-43.1 «NP V»: agent=Theme |

### Option 4 {#o4}

<!-- .ven lang=en -->
No, because it's secretly an acid

```conllu
# sent_id = question:chemistry:16-alkalis-and-soda:t5:o4:1
# text = No, because it's secretly an acid
1	No	no	INTJ	UH	Polarity=Neg	8	discourse	_	SpaceAfter=No
2	,	,	PUNCT	,	_	8	punct	_	_
3	because	because	SCONJ	IN	_	8	mark	_	_
4	it	it	PRON	PRP	Case=Nom|Gender=Neut|Number=Sing|Person=3|PronType=Prs	8	nsubj	_	SpaceAfter=No
5	's	be	AUX	VBZ	Mood=Ind|Number=Sing|Person=3|Tense=Pres|VerbForm=Fin	8	cop	_	_
6	secretly	secretly	ADV	RB	_	8	advmod	_	_
7	an	a	DET	DT	Definite=Ind|PronType=Art	8	det	_	_
8	acid	acid	NOUN	NN	Number=Sing	0	root	_	_
```

<!-- .fr -->
| # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1 | **is a** | present | it | a acid |  |  |  | secretly *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.

<!-- /div -->

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