--- title: Melting, freezing, boiling and condensing are reversible changes, be… — Changes you can undo and changes you can't · tree and pragmatics description: Melting, freezing, boiling and condensing are reversible changes, because the molecules stay the same. Who acts: Melting, molecules. A sentence of the lesson «Changes you can undo and changes you can't» of the chemistry course of Mova's primary school with its dependency tree and the pragmatics of e --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/chemistry/9-changes-you-can-and-cannot-undo/5/) [home](https://md.mova.elamur.ai/free/en/) / [corpora](https://md.mova.elamur.ai/free/en/corpora/) / [school](https://md.mova.elamur.ai/free/en/corpora/school/) / [Chemistry](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/) / [Changes you can undo and changes you c…](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/9-changes-you-can-and-cannot-undo/) / 5 # Changes you can undo and changes you can't, sentence 5 Melting, freezing, boiling and condensing are reversible changes, because the molecules stay the same. **Who acts:** Melting, molecules · **What happens:** be, stay · **To what, where:** reversible changes This is a sentence of the lesson «Changes you can undo and changes you can't» of the chemistry course of Mova's primary school. The page gives its syntax tree — a dependency tree in the style of Universal Dependencies — and its pragmatics clause by clause: who acts (Melting, molecules), what happens, when and where, as Mova's frames read it from the tree. ## The tree {#tree} ```conllu # sent_id = school:chemistry:009-changes-you-can-and-cannot-undo.lesson:5 # text = Melting, freezing, boiling and condensing are reversible changes, because the molecules stay the same. # source = school lesson (ours) # course = chemistry # lesson = 009-changes-you-can-and-cannot-undo.lesson # annotation = Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R8-pos-agree ×2 1 Melting melting NOUN NN Number=Sing 10 nsubj _ _ 2 , , PUNCT , _ 3 punct _ _ 3 freezing freezing NOUN NN Number=Sing 1 conj _ _ 4 , , PUNCT , _ 5 punct _ _ 5 boiling boiling NOUN NN Number=Sing 1 conj _ _ 6 and and CCONJ CC _ 7 cc _ _ 7 condensing condensing NOUN NN Number=Sing 1 conj _ Agree=R8-pos-agree|Haiku=1:conj|HaikuPos=VERB:VBG:Tense=Pres|VerbForm=Part 8 are be AUX VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 10 cop _ _ 9 reversible reversible ADJ JJ Degree=Pos 10 amod _ _ 10 changes change NOUN NNS Number=Plur 0 root _ _ 11 , , PUNCT , _ 15 punct _ _ 12 because because SCONJ IN _ 15 mark _ _ 13 the the DET DT Definite=Def|PronType=Art 14 det _ _ 14 molecules molecule NOUN NNS Number=Plur 15 nsubj _ _ 15 stay stay VERB VBP Mood=Ind|Number=Plur|Person=3|Tense=Pres|VerbForm=Fin 10 advcl _ Agree=R8-pos-agree|Haiku=10:advcl|HaikuPos=VERB:VB:VerbForm=Inf 16 the the DET DT Definite=Def|PronType=Art 17 det _ _ 17 same same ADJ JJ Degree=Pos 15 xcomp _ _ 18 . . PUNCT . _ 10 punct _ _ ``` ## Pragmatics {#pragmatics} - form: statement - act: assert - voice: narrator - polarity: none - teacher: kept the draft | # | verb | tense, mood | who | what, whom | to whom | where | when | other | roles by | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | 1 | **is a** | present | Melting and freezing and boiling and condensing | reversible changes | | | | | tree rules | | 2 | **stay** | present | the molecules | | | | | same *property* | vn exist-47.1 «NP V»: agent=Theme | 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. **Licence: [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)**, as the whole of Mova corpus 0.4, of which this treebank (the agreed school, `mova-school-agreed-en.conllu`) is part. The lessons were written for Mova's primary school. Sentence `school:chemistry:009-changes-you-can-and-cannot-undo.lesson:5`. **The tree:** Mova annot: Rust (en) → Haiku 5.5 (medium, Batches API) patches; gates UD 2.18; agreed by treeagree rules (Stanza, Trankit, spaCy trf): R8-pos-agree ×2. **The frames** are read from the tree by Mova's frames reader (`prag`) when this page is built, the lesson read in order, so a pronoun may be resolved from an earlier sentence. See the [release 0.4](https://md.mova.elamur.ai/free/en/releases/0.4/). - ← previous: [Changes you can undo and changes you c…, 4](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/9-changes-you-can-and-cannot-undo/4/) - next →: [Changes you can undo and changes you c…, 6](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/9-changes-you-can-and-cannot-undo/6/) - ↑ back to [the lesson](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/9-changes-you-can-and-cannot-undo/)