chemical changes
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![Page 1: Chemical changes](https://reader036.vdocument.in/reader036/viewer/2022083022/58ab39c91a28abb64d8b66d5/html5/thumbnails/1.jpg)
What is chemical changes?
![Page 2: Chemical changes](https://reader036.vdocument.in/reader036/viewer/2022083022/58ab39c91a28abb64d8b66d5/html5/thumbnails/2.jpg)
• What has happened to the metal?
![Page 3: Chemical changes](https://reader036.vdocument.in/reader036/viewer/2022083022/58ab39c91a28abb64d8b66d5/html5/thumbnails/3.jpg)
![Page 4: Chemical changes](https://reader036.vdocument.in/reader036/viewer/2022083022/58ab39c91a28abb64d8b66d5/html5/thumbnails/4.jpg)
How make yoghurt in home?
• Take 500 ml warm milk and add three tablespoons of plain active yoghurt. Mix well and pour into a thermos flask. Leave the thermos flask unopened for 12-18 hours. When you open it, the milk should have become yoghurt.