Studyfin Studyfin ✨ Sign up free

States of matter

Grade 5 · Science · Free lesson

Hi there! I am Studyfin, your science guide. Today, we will explore the amazing states of matter!

Everything around us is made of matter. Matter can exist in three main states: solids, liquids, and gases. Each state has its own special properties.

question mark

In a solid, the tiny parts are packed very close together. They can only wiggle in place. This gives a solid a fixed shape, like a toy block.

Solid: Packed and WigglingThe parts stay in a tight, neat group!

In a liquid, the parts have a little more room. They can slide and roll past each other. This lets a liquid flow and take the shape of its container.

Liquid: Sliding and FlowingThe parts slide around to fill the bottom.

In a gas, the parts are spread far apart. They move very fast in all directions. A gas will expand to fill up any space it is given.

Gas: Fast and Far ApartThe parts bounce around and fill the space.
✏️ Worked example

Let us connect what we know to a real book! Imagine reading a story about a cold winter day. The characters skate on a frozen lake, drink hot cocoa, and see steam rise from the mug. How can we connect our own lives to these three states of matter?

  1. First, find the solid in the story. The ice on the lake is solid water. I can connect this to when I use ice cubes to cool down my water at home.
  2. Next, find the liquid. The hot cocoa is a liquid. This connects to my memory of drinking warm milk on a rainy day.
  3. Then, find the gas. The steam rising from the mug is water vapor, which is a gas. I can connect this to seeing steam rise when my parents boil pasta.
  4. Finally, think about how these connections help us. Relating the story to my own life makes the science of matter easy to understand!
question
Want the full interactive lesson — quiz, animations, and Finn cheering them on?

More Science lessons