Solid, Liquid, Gas

在B站看见了一个系列视频，据说是美国小学生的自然科学课，刚好拿来学一学英语。下面是做的一些笔记以及自己尝试的一些描述。
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All things are made of matter. Matter has three forms. They are solid, liquid, and gas.
A solid is matter with its own shape. A rock and a book are solids. Even if we move a solid, it keeps its shape.
A liquid is matter that flows. Water and oil are liquids. A liquid does not have its own shape. A liquid takes the shape of its container.
A gas is matter that does not have its own shape like a liquid. A gas spreads to fill all the space of its container. When you blow up a balloon, the air spreads and fills all the space of it.
Matter can change forms. Freeze a liquid and it changes to a solid. If you freeze water, it changes to a liquid. An ice cream melts in the hot weather. Boil water and it changes to a vapor.

My description:
A matter has three forms: solid, liquid, and gas.
A solid has it own shape. Ice, rocks are both soild.
A liquid flows when it haven't a container. Its shape changes with container. Water and oil are both liquid.
A gas does not have own shape too. But it is not the same as a liquid. If you put a gas into a container, it will spread and fill the container rather on the bottom of the container. Air is a common type of gas.
If you increasing the temperature, the water will becoming vapos. This process is called boil. Freeze means a process that a liquid becoming a soild. Water freeze then we can get an ice. And if we are in summer, ice will melt to water.
In face, an ice, water, and vapos are three different forms of the same matter. A solid melt to a liquid, a liquid freeze to a solid, and a liquid boil to a gas.