Wednesday, 7 June 2017

Elements, compounds, acids and bases.

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1 comment:

  1. Anonymous1 August 2017 at 14:12

    Hi Arly it's Korban. I really enjoy Powtoon, it makes your work so much more interesting. I like how you explained that one molecule + another molecule = A compound.

    ReplyDelete

Thank you for your positive, thoughtful, helpful comment.

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