Is a powder (like salt or flour) a solid or a liquid? Why can it be poured like a liquid? 粉末（如盐或面粉）是固体还是液体？为什么它可以像液体一样倾倒？

Name two Electrical Appliances you have at home and explain what they do. 列举两个你家里的电器，并解释它们的作用。

When iron, water, and air mix together, they make Rust. Is this a physical change or a chemical reaction? Why? 当铁、水和空气混合在一起时，它们会产生铁锈。这是物理变化还是化学反应？为什么？

When we hit a drum, why does it make a sound? 当我们敲击鼓面时，为什么会发出声音？

In a food chain where a cat eats a mouse, which animal is the Predator and which is the Prey? 在一个猫吃老鼠的食物链中，哪种动物是捕食者，哪种是猎物？

If a material changes from a solid to a liquid, does it become a completely different substance? 如果一种材料从固体变成液体，它会变成一种完全不同的物质吗？

Explain the difference between a Herbivore and a Carnivore. 解释草食动物和肉食动物之间的区别。

Why can a Gas change its shape and fill a whole room? Describe its particles. 为什么气体可以改变形状并充满整个房间？描述它的粒子。

Can energy change from one form to another? Give an example from your house. 能量可以从一种形式转化为另一种形式吗？请举一个家里的例子。

Describe how particles are arranged in a Solid. Do they move around? 描述固体中粒子的排列方式。它们会到处移动吗？

All matter is made of tiny pieces. What happens to these pieces when we heat a substance? 所有物质都由微小的碎片组成。当我们加热物质时，这些碎片会发生什么？

What is the difference between Melting and Solidifying? 熔化和凝固之间有什么区别？

What do we call the energy an object has because it is moving? 物体因为运动而具有的能量称为什么？