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Materi

Materi. Punya massa = Ukuran : Jumlah penyusun Kelembaman Perlu ruang. Klasifikasi Materi. Energi menyebabkan perubahan. Hukum Kekekalan Massa ( Antoine Laurent Lavoiser ). C 2 H 5 OH + O 2 → CO 2 + H 2 O massa C 2 H 5 OH + massa O 2 = massa CO 2 + massa H 2 O.

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Materi

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  1. Materi • Punya massa = Ukuran : • Jumlah penyusun • Kelembaman • Perlu ruang

  2. Klasifikasi Materi

  3. Energi menyebabkan perubahan

  4. Hukum Kekekalan Massa(Antoine Laurent Lavoiser) C2H5OH + O2→ CO2 + H2O massa C2H5OH + massa O2 = massa CO2 + massa H2O CaCO3→ CaO + CO2 massa CaCO3 = massa CaO + massa CO2 Fe + 2 S → FeS2 massa Fe + massa S = massa FeS2

  5. Hukum Perbandingan Tetap(Joseph Proust) (1 x Ar Fe) + (1 x Ar S) = (1 x 56) : (1 x 32) = 7 : 4

  6. Hukum Perbandingan Tetap(Joseph Proust) (1 x Ar Fe) + (2 x Ar S) = (1 x 56) : (2 x 32) = 7 : 8

  7. Hukum Perbandingan Berganda(Dalton) Dalam senyawa FeS dan FeS2 • massa S dalam FeS : massa S dalam FeS2 = 1 : 2 • massa Fe dalam FeS : massa Fe dalam FeS2 = 2 : 1

  8. Soal • Berapa perbandingan massa S : massa O dalam senyawa : • SO2 • SO3 • Berapa perbandingan massa O dalam SO2 : massa O dalam SO3 • Berapa perbandingan massa S dalam SO2 : massa S dalam SO3 • Berapa perbandingan massa N : massa O dalam senyawa : • NO2 • N2O5 • Berapa perbandingan massa N dalam NO2 : massa N dalam N2O5 • Berapa perbandingan massa O dalam NO2 : massa O dalam N2O5 Massa atom relatif (Ar) N = 14, O = 16, S = 32

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