--- title: The fizz: vinegar, lemon and soda — a lesson of Mova's school · trees and pragmatics description: «The fizz: vinegar, lemon and soda», a lesson of the chemistry course of Mova's primary school, sentence by sentence with dependency trees and pragmatics. It begins: Pour vinegar onto a heap of baking soda and it froths up like a witch's cauldron. --- [Mova](https://md.mova.elamur.ai/free/en/) · [this page in HTML](https://mova.elamur.ai/free/en/corpora/school/chemistry/18-the-fizz-vinegar-lemon-and-soda/) [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/) / The fizz: vinegar, lemon and soda # The fizz: vinegar, lemon and soda Lesson 18 of the chemistry course of Mova's primary school: 21 sentences, each with its syntax tree and pragmatics. The lessons are written for Mova, and their agreed trees are part of Mova corpus 0.4 (CC BY-SA 4.0). How Mova does on its tests: [the lesson at school](https://md.mova.elamur.ai/free/en/school-run/chemistry/18-the-fizz-vinegar-lemon-and-soda/). - [0](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/18-the-fizz-vinegar-lemon-and-soda/0/) — Pour vinegar onto a heap of baking soda and it froths up like a witch's cauldron. - [1](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/18-the-fizz-vinegar-lemon-and-soda/1/) — The acid in the vinegar and the alkali in the soda react and make a new substance, carbon dioxide gas, which bubbles out. - [2](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/18-the-fizz-vinegar-lemon-and-soda/2/) — When the fizz stops, one of the two has been used up. - [3](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/18-the-fizz-vinegar-lemon-and-soda/3/) — Add more of whichever ran out and the fizzing starts again: that is how you can find out which one it was. - [4](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/18-the-fizz-vinegar-lemon-and-soda/4/) — Carbon dioxide is invisible but heavier than air. - [5](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/18-the-fizz-vinegar-lemon-and-soda/5/) — It can fill a balloon that will not float, and a grown-up can even "pour" it from a jug over a candle and put the flame out. - [6](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/18-the-fizz-vinegar-lemon-and-soda/6/) — Eggshell and chalk are calcium carbonate, so they fizz in vinegar too, and geologists test rocks with a drop of acid: limestone fizzes. - [7](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/18-the-fizz-vinegar-lemon-and-soda/7/) — Warm vinegar fizzes harder, because warmth makes particles move faster and meet more often. - [8](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/18-the-fizz-vinegar-lemon-and-soda/8/) — The science-fair volcano is great fun, but real volcanoes are completely different: they erupt melted rock pushed out by hot gases from deep underground. - [9](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/18-the-fizz-vinegar-lemon-and-soda/9/) — Vinegar (an acid) and baking soda (an alkali) react to make carbon dioxide gas, which makes the fizz. - [11](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/18-the-fizz-vinegar-lemon-and-soda/11/) — Washing-up liquid in a model volcano traps the carbon dioxide in bubbles and makes foam. - [12](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/18-the-fizz-vinegar-lemon-and-soda/12/) — Real volcanoes erupt melted rock pushed by hot gases deep underground, not by vinegar and soda. - [13](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/18-the-fizz-vinegar-lemon-and-soda/13/) — Carbon dioxide is heavier than air, so a balloon filled with it from the reaction does not float. - [14](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/18-the-fizz-vinegar-lemon-and-soda/14/) — Carbon dioxide pushes oxygen away from a flame, so poured over a candle it puts it out; some fire extinguishers use it. - [15](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/18-the-fizz-vinegar-lemon-and-soda/15/) — Sherbet has a dry acid and baking soda that only react when wet, so it fizzes in your mouth and not in the packet. - [16](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/18-the-fizz-vinegar-lemon-and-soda/16/) — Popping candy works differently: gas is trapped inside hard sugar and pops out as the sugar melts. - [17](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/18-the-fizz-vinegar-lemon-and-soda/17/) — Gas made in a closed container pushes on the walls until the weakest part gives, so reacting chemicals in a tightly closed bottle can burst it dangerously. - [18](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/18-the-fizz-vinegar-lemon-and-soda/18/) — Eggshell is calcium carbonate; in vinegar it fizzes away over days and leaves a rubbery egg held by its thin skin. - [19](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/18-the-fizz-vinegar-lemon-and-soda/19/) — Chalk and limestone are calcium carbonate too and fizz with acid; chalk cliffs are made from the shells of countless tiny sea creatures. - [20](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/18-the-fizz-vinegar-lemon-and-soda/20/) — Reactions go faster when warm, because particles move faster and meet more often; the same is why food goes off slower in the fridge. - [21](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/18-the-fizz-vinegar-lemon-and-soda/21/) — In a fair test you change only one thing and keep everything else the same, and scientists repeat tests to make sure a result was not luck. - ← previous: [Indicators: the red-cabbage rainbow](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/17-indicators-the-red-cabbage-rainbow/) - next →: [Fizzy drinks, Mentos and cola](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/19-fizzy-drinks-mentos-and-cola/) - ↑ back to [Chemistry](https://md.mova.elamur.ai/free/en/corpora/school/chemistry/)