![](https://play-lh.googleusercontent.com/a-/ALV-UjXrGhjS8BLrw9T79FN7fetQWju0qYEnVLnxXugQlu3qy2M52XTwug=s32)
Rachel Benzoni
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This app is really great; however, on several questions, there are multiple identical options that are the correct answer. For example, when answering a question about atoms of the same element w different #s of neutrons, the correct answer "isotopes" appears twice. Please fix this because the app is otherwise wonderful. -High school chemistry teacher who wants to share this with their students
![](https://play-lh.googleusercontent.com/a-/ALV-UjUH3D4TtKZHZnjaiJzWujPbnbCPB-WO9VBLcFzZ--tEtiBm49z1EA=s32)
Gisele Duarte
in general, it is a great game, but some questions have two identical answers
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