Can anyone explain to me what this means?(Khan Academy) Watch

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So I just did a few exercises about the Chemistry content learned at school today on Khan Academy. After that this appeared on my screen. I really don't know what it means, so can anyone explain to me?Name:  Screenshot_2019-09-11-19-09-20-907_com.android.chrome.png
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zoae
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It means that you have acquired great comprehension of this unit and collected a whole bunch of points. You ought to move forward to the subsequent unit, whose title is "Electronic structure of atoms".
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