1. Phases of Matter

2. Phases of Matter
Solids: Particles are tightly packed together and DO NOT move past each other. They vibrate in place.
The animation on this slide is meant to show students that the atoms in a SOLID object are moving, but cannot move past one another.

3. Phases of Matter Examples of Solids:
Just a few examples of “Solids” the students may have used in the last 24 hours: ice, bicycle, school desk, road sign, school bus, clothing

4. Phases of Matter Solids have a definite SHAPE
Solids have a definite VOLUME
Example—Marble
Shape = Sphere
Volume = can be found using water displacement

5. Phases of Matter Solids have a definite SHAPE
Solids have a definite VOLUME
Freezing point- The temperature that makes a liquid turn into a solid. This is 32 degrees Fahrenheit for water.
Melting point - The temperature that makes a solid turn into a liquid. This is above 32 degrees Fahrenheit.

6. Phases of Matter
Liquids: Particles are still tightly packed together and they SLIDE move past each other.
The animation on this slide is meant to show students that the atoms in a liquid are relatively close together, but slide past one another.
© 2013 S. Coates

7. Phases of Matter Examples of Liquids:
Examples of liquids: milk, ocean, gasoline, melted chocolate, soda, lemonade
© 2013 S. Coates

8. Phases of Matter
Liquids DO NOT have a definite SHAPE, they take the shape of their container.
Liquids have a definite VOLUME
Example—Orange Juice
Shape = None, it takes the shape of the glass.
Volume = can be found using a beaker or graduated cylinder.

9. Phases of Matter
Here’s where we talk a little about that really cool substance called Water.
© 2013 S. Coates

10. Phase of Matter
Water Molecules have special bonds that hold them together. As the molecules on the surface of the water stick together, they form an invisible “skin” called Surface Tension. We will talk more about what cause this bond later. For now, let’s play with this cool thing called Surface Tension.
Discovery Time
© 2013 S. Coates