Hukum Kekekalan Massa: Massa sebelum reaksi = Massa sesudah reaksi (m_{Mg} + m_{O_2} = m_{MgO}) (12 \text{ g} + 8 \text{ g} = 20 \text{ gram}) Jawaban: 20 gram.
Untuk memberikan gambaran konkret, berikut adalah contoh soal representatif yang sering muncul dalam OSN IPA SMP, dibagi berdasarkan bidang kajian utama. soal osn ipa smp dan pembahasannya
✅ Authentic-Like Problems – Many questions mirror the difficulty, logic, and trickiness of actual OSN questions, including multi-concept problems (e.g., combining force and heat transfer). ✅ Step-by-Step Solutions – The pembahasan (discussion) is generally clear, showing not just the answer but why other options are wrong and the scientific reasoning behind each step. ✅ Topic Grouping – Questions are often grouped by topic (e.g., motion, electricity, ecology), making targeted practice easy. ✅ Helps Build Critical Thinking – Unlike regular school exams, these problems require applying concepts to novel situations—exactly what OSN tests. ✅ Time-Saver for Coaches & Parents – No need to hunt for past papers or write your own answer keys. Hukum Kekekalan Massa: Massa sebelum reaksi = Massa
Sebelum masuk ke pembahasan soal, penting bagi siswa untuk memahami "medan perang". Soal OSN IPA SMP memiliki karakteristik khusus yang membedakannya dari ujian harian atau ujian akhir semester: ✅ Time-Saver for Coaches & Parents – No
, berapakah energi kinetik benda saat mencapai ketinggian 0,6 m? Gunakan Hukum Kekekalan Energi Mekanik ( Posisi Awal (1): Posisi Akhir (2):
Pengukuran (besaran & satuan), Kalor, Mekanika (Gerak & Gaya), Fluida statis/dinamis, Cahaya dan Optik, serta Kelistrikan.