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FENOMENA

              Setelah mengamati  dengan seksama video 1 dan 2 nampak bahwa kulit  telur  dan

              gigi   sama-  sama  mengandung  kalsium.  Kulit  telur  akan  terkikis  oleh perendaman
              dengan asam cuka dalam beberapa waktu beberapa jam dan ketika kita makan atau

              minum  gigi pun juga mengalami  hal seurpa yaitu terkikis  oleh senyawa asam yang
              bera s a l
                           dari minuman,  namun faktanya  gigi  tidak  akan terkikis  seperti  pada kulit
              telur. Mengapa hal tersebut dapat terjadi?



               1.  Rumusan Masalah

                  Buatlah  rumusan  masalah  untuk  kedua  fenomena  di  atas.  Cobalah  berfikir  secara
                   bersama-sama apa rumusan masalah yang muncul dari fenomena tersebut!
                  Jawab:
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                 Tahap 2: Verifikasi Pengumpulan


                Data
               2.  Hipotesis

                  Bacalah materi pada buku pelajaran kalian, LKPD. internet, jurnal, atau sumber
                    lainnya!
                  untuk  menemukan  jawaban  sementara  (hipotesis)  berdasarkan  rumusan  masalah

                  yang telah kalian buat. Tuliskan hipotesis kalian di bawah ini!
                   Jawab:
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           SMA Negeri 1 Waru Sidoarjo - Tahun Pelajaran 2022/2023                                        3
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