物质由粒子组成

建立一个模型来描述物质是由小到看不见的粒子组成的，并以此解释固体、液体和气体的性质。

Develop a model to describe that matter is made of particles too small to be seen, and that this explains properties of solids, liquids, and gases

学习证据 / Evidence

• 描述物质由小到肉眼看不见的粒子组成
• 运用粒子模型解释差异：粒子紧密排列（固体）、松散排列（液体）、相距很远（气体）
• 运用粒子模型解释状态变化（例如加热会使粒子运动加快并彼此分开）

• Describe matter as made of particles too small to see with the naked eye
• Use a particle model to explain differences: particles tightly packed (solid), loosely arranged (liquid), spread far apart (gas)
• Use the particle model to explain a state change (e.g. heating makes particles move faster and spread apart)

评估问题 / Assessment

{{name}}能解释所有东西都由我们看不见的微小粒子组成，而且这些粒子排列的紧密程度决定了它是固体、液体还是气体吗？

Can {{name}} explain that everything is made of tiny particles we can't see, and that how tightly packed they are determines whether something is a solid, liquid, or gas?