🧪 Science Fusion 2 – Lesson 5: How Can Matter Change? 📘 本週主題：Matter 溶解與分離（Dissolving & Separating） 在這一課中，我們透過觀察 不同溫度的水，以及油和水的實驗，來探索「物質的變化」。老師準備了三杯水：熱水、溫水和冷水，並加入鹽巴進行溶解實驗，同時加入油來觀察它是否可以混合。 🔍 實驗重點： 1. What is dissolving? 什麼是「溶解」？當像**鹽巴（salt）這樣的物質加入水中，會漸漸「不見」，因為它溶解（dissolve）**在水裡，變成看不到的鹽水。 2. What affects the speed of dissolving? 溫度會影響溶解速度。熱水裡鹽巴溶解得比較快，冷水則比較慢。 3. What if it doesn’t mix at all? 有些物質（例如油 Oil）無法溶解在水中，也無法混合，而是分開（separate），油會漂浮在水面上。這種現象叫做「不相容（immiscible）」。 ✅ 小朋友透過這次實驗可以學習到： • 鹽巴在不同溫度下的溶
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