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motivasi belajar plus (bu etna)

Arsip Bulan February 2015

Miskonsepsi tentang rumus molekul

Berikut merupakan suatu miskonsepsi tentang pengertian rumus molekul suatu senyawa kovalen. Saya merasa bertanggung jawab untuk meluruskan hal ini. Sebenarnya konsep sekitar rumus kimia zat kurang dipahami oleh sebagian siswa. Mereka umumnya menghafalkan rumus-rumus kimia tersebut tanpa menalarnya. Hal ini menjadi salah satu penyebab kesalahan penulisan rumus kimia yang terus terjadi hingga siswa tersebut menghadapi ujian akhir.

Beberapa siswa bertanya tentang rumus kimia asam asetat (asam cuka). Berikut layanan saya kepada salah satu siswa yang menghubungi saya lewat Line.

"Ibu ...

Titrasi dengan indikator metil merah

Bahagia sekali saya sebagai pensiunan guru kimia yang masih terus diperlukan untuk melayani bangsa kapan pun dan di mana pun berada. InsyaaAllah pikun tak segera datang bertamu ...

Pemilihan indikator pada titrasi asam basa

Diskusi ini terjadi melalui sms, Line, juga WA. Sebagai guru yang sudah purna tugas, saya merasa amat sayang jika pengetahuan dan pengalaman yang saya miliki ini dibiarkan mengendap atau menguap tak berbekas. Oleh sebab itulah saya terus berupaya untuk melayani bangsa ...

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