- February 15, 2019 Materi Kimia Tri Jati Harmoko Personal [ssba] - Materi Kimia adalah situs web sains yang menyediakan materi kimia sma, materi kimia dasar, materi kimia universitas, serta materi ipa smp. 3 Welcome To IWA 2019! Close We’re sorry! IWA 2019 voting is closed. We’re currently processing the results. Thank you. Voting Ended rating 66.0 Judge