Mysteries of Matter: Exploring Changing States

Mysteries of Matter: Exploring Changing States

Learning Objective

At the end of the lesson, you will be able to identify a range of materials and how they change states.

What do you already know about changing states of matter?

Introduction to States of Matter

Matter exists in three states: solid, liquid, and gas. Different materials can change from one state to another.

Properties of Solids

Solids have a fixed shape and volume. They do not flow and cannot be compressed easily.

Properties of Liquids

Liquids take the shape of their container and have a definite volume. They can flow and are not easily compressed.

Properties of Gases

Gases have no fixed shape or volume. They can flow and are easily compressed.

Changing States: Melting and Freezing

When a solid is heated, it melts and turns into a liquid. When a liquid is cooled, it freezes and becomes a solid.

Changing States: Evaporation and Condensation

When a liquid is heated, it evaporates and becomes a gas. When a gas is cooled, it condenses and becomes a liquid.

Changing States: Sublimation and Deposition

Some solids can change directly into gases without becoming a liquid first (sublimation). Gases can also change directly into solids (deposition).

Review and Application

Recap the concepts learned and encourage students to identify examples of materials changing states in their surroundings.

Write down 3 things you learned in this lesson.

Have students enter three things they learned in this lesson. With this they can indicate their own learning efficiency of this lesson.

Write down 2 things you want to know more about.

Here, students enter two things they would like to know more about. This not only increases involvement, but also gives them more ownership.

Ask 1 question about something you haven't quite understood yet.

The students indicate here (in question form) with which part of the material they still have difficulty. For the teacher, this not only provides insight into the extent to which the students understand/master the material, but also a good starting point for the next lesson.