6th Grade Science / Lesson 6 - Solids, Liquids and Gases
Solids, Liquids and Gases
What will we be learning today?
What Are Solids, Liquids, and Gases Like?
Pick up a nearby solid object, like an apple, a book, or a pencil. Solids are easy to hold because they tend to keep the same size and shape. Holding a liquid is more difficult, however, because liquids change shape easily. As for gases, they change their size and shape. You need a closed container, like a balloon, to hold a gas. How can you explain these properties of size and shape? The best way is to look at the tiny pieces, or particles, that make up solids, liquids, and gases. Take a look at the following illustrations.
Like other solids, a stick of wood has a definite shape and volume. This is because the particles stay in a rigid arrangement
Liquids fill the shape of their containers but keep the same volume. In liquids the particles are free to move around one another
Liquids fill the shape of their containers but keep the same volume. In liquids the particles are free to move around one another Let's Review What We Learned Today!