变化与分离词汇

掌握描述物态变化和物质分离的过程性词汇：溶解、溶液、可溶的、不可溶的、蒸发、凝结、熔化、凝固、过滤、过筛、混合物、分离，并准确理解每个词的含义，尤其是‘溶解’和‘熔化’之间的重要区别。

Use process vocabulary for changes of state and material separation — dissolve, solution, soluble, insoluble, evaporate, condense, melt, freeze, filter, sieve, mixture, separate — and understand precisely what each term describes, including the important distinction between dissolving and melting

学习证据 / Evidence

• 在具体情境中正确区分‘溶解’和‘熔化’，并解释两者的不同
• 在描述某种物质能否溶于水时，准确使用‘可溶的’和‘不可溶的’
• 使用‘蒸发’和‘凝结’等正确术语，解释蒸发与凝结的区别

• Distinguish 'dissolve' from 'melt' correctly in context and explain the difference
• Use 'soluble' and 'insoluble' accurately when describing whether a material dissolves in water
• Explain the difference between evaporation and condensation using the correct terms

评估问题 / Assessment

如果{{name}}把糖放进茶里搅拌，能否解释糖是溶解了还是熔化了，并说明这两者不是一回事？

If {{name}} stirs sugar into tea, can they explain whether the sugar dissolved or melted — and tell you those are different things?