How to Make Aluminum Oxide (Al2O3)-IMPROVED VERSION

*REUPLOADED DUE TO AUDIO ISSUE*
In this video, we will make aluminum oxide, a useful catalyst that I will use in upcoming videos.
***ANNOUNCEMENT***
Thank you guys so much for helping me reach 1,000 subscribers. I am extremely grateful to have the support of each and every one of you.
To celebrate, I am planning on making a special video for the occasion. However, I want your input in deciding what kind of video you want this to be. I've listed a few ideas below, but feel free to suggest your own ideas.
1) List Video: something like "5 reactions you can do with home chemicals"
2) Pyrotechnics/explosions: thermite, booms, bangs, whatever!
3) Specific reaction; let me know if you guys have any specific reactions you'd like to see me perform!

*About the Na2CO3 error; You should use 3.5 g of Na2CO3 per 1.00 gram of Al2O3 you want to make. The reason I didn't re-record this is because I am on vacation and I didn't bring my microphone.
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