Thermal Decomposition of Zinc Carbonate

Zinc carbonate is a white powdery solid. When it is heated strongly, it starts to turn yellow and decompose - carbon dioxide gas is evolved, which forms a white precipitate in limewater.

The yellow solid left behind in the test-tube is hot zinc oxide. As the hot zinc oxide cools, it turns white in colour.

[Focuspls-xksj]

thank you im watching this before my practical exam

[aryansista]

Thank you for the video...this has helped me a lot to understand visually about the thermal decomposition of zinc carbonate...and why does it turn yellow.Thank you.

[boofang]

Thanks Mr Yeo 👍🏻👍🏻 .. well composed video, especially with catchy guitar tunes !! 😁🎶🎵

[kumaratharva]

Thanks sir for the informative video as it will come to my 20 mark project ❤

[editsbhavi]

Thank you can understand very well from this video

[nguyen]

May I ask whether you have recorded the mass change for this experiment?

[rubyfinneran]

Is carbon dioxide produced in all thermal decomposition reactions? And is the limewater to show that it is thermal decomposition because carbon dioxide is produced?

[tishlox]

A doubt here! When we leave the yellow zinc oxide to cool it turns white. Does that mean it turns into zinc carbonate again?
[Please answer urgently]

[farzanul]

How many seconds does it take to happen

[shivanipatel]

hey i have a question why does zinc carbonate turn yellow when heat and goes back to white when cool down