--- title: "Year 5 - Reversible and Irreversible changes" url: "https://www.stbarnabasdarwen.co.uk/news/2023-09-26-year-5-reversible-and-irreversible-changes" school: "St Barnabas Primary School, A Church of England Academy" --- We are holding a number of open days for children due to start primary school in September 2027. Please see our admissions page for further details. Everyone welcome! # Year 5 - Reversible and Irreversible changes ![](https://files.schudio.com/st-barnabas-primary-school/images/news/IMG_1162.jpeg) 26 September 2023 ![](https://www.stbarnabasdarwen.co.uk/images/news/IMG_1162.jpeg) Year 5 have continued to look at reversible and irreversible changes in science. During this lesson, the children experimented and observed two reactions both demonstrating a different change in matter. The first reaction we looked at the burning of a candle, wax melting and the carbon dioxide that is released into the air by burning the wick. The second reaction, the children mixed bicarbonate of soda with vinegar. This resulted in the foaming of the solution creating a new gas due to the chemical reaction. The gas that is formed is called carbonic acid and the children explored the change and how the bicarbonate decomposes to create gas. [Year 5](https://www.stbarnabasdarwen.co.uk/news/tag/year-5) [Science](https://www.stbarnabasdarwen.co.uk/news/tag/science) [![](https://files.schudio.com/st-barnabas-primary-school/imagecache/100x100c/news/B838A290-0279-43B9-8C28-3AEFFBB6E465.jpeg)](https://www.stbarnabasdarwen.co.uk/news/2023-09-26-year-6-history) Previous ### [Year 6 History](https://www.stbarnabasdarwen.co.uk/news/2023-09-26-year-6-history) [![](https://files.schudio.com/st-barnabas-primary-school/imagecache/100x100c/news/IMG_5353.jpeg)](https://www.stbarnabasdarwen.co.uk/news/2023-09-26-reception-lunch-time-muga-session) Next ### [Reception- Lunch time MUGA session.](https://www.stbarnabasdarwen.co.uk/news/2023-09-26-reception-lunch-time-muga-session) ### Personal Development - [News](https://www.stbarnabasdarwen.co.uk/news) - [Events](https://www.stbarnabasdarwen.co.uk/events) - [Photo Gallery](https://www.stbarnabasdarwen.co.uk/photo-gallery-category/our-gallery) - [Calendar](https://www.stbarnabasdarwen.co.uk/calendar) - [School Council](https://www.stbarnabasdarwen.co.uk/academy-life/school-council) - [Attendance](https://www.stbarnabasdarwen.co.uk/academy-life/attendance) - [Fundraising](https://www.stbarnabasdarwen.co.uk/academy-life/fundraising) - [Extra Curricular Clubs](https://www.stbarnabasdarwen.co.uk/academy-life/clubs) - [Little Leaders](https://www.stbarnabasdarwen.co.uk/academy-life/little-leaders) - [Visits and Visitors](https://www.stbarnabasdarwen.co.uk/visits-and-visitors) - [British Values](https://www.stbarnabasdarwen.co.uk/british-values) - [Protected Characteristics](https://www.stbarnabasdarwen.co.uk/protected-characteristics) ##### Location Knowlesly Road Darwen Lancashire BB3 2JA ##### Contact Us 01254 702996 ##### Stay Connected - [Facebook](https://www.facebook.com/stbarnabasce/) - [X](https://twitter.com/stbarnabasce) © Copyright 2021–2026 St Barnabas Primary School, A Church of England Academy School & Trust Websites by [ ![Schudio logo](https://www.stbarnabasdarwen.co.uk/img/logo/light.png) ](https://www.schudio.com/)