分离混合物
Separating Mixtures
利用固体、液体和气体的知识，判断如何通过过滤、筛分和蒸发来分离混合物。
Use knowledge of solids, liquids, and gases to decide how mixtures might be separated through filtering, sieving, and evaporating
学习证据 / Evidence
- 针对给定的混合物选择正确的分离方法（大颗粒用筛分，小颗粒用过滤，溶解物用蒸发）。
- 描述像沙子、盐和水这样的复杂混合物的多步分离计划。
- 根据材料性质解释每种方法可行的原因。
- Choose the correct separation method for a given mixture (sieving for large particles, filtering for small, evaporating for dissolved)
- Describe a multi-step separation plan for a complex mixture like sand, salt, and water
- Explain why each method works based on the properties of the materials
评估问题 / Assessment
如果{{name}}有一份沙子、盐和水的混合物，能否想出一个分步计划，利用筛子、过滤和蒸发将三种物质全部分离？
If {{name}} has a mixture of sand, salt, and water, can they figure out a step-by-step plan to separate all three using a sieve, filter, and evaporation?