1. SC.8.P.8.1 Explore the scientific theory of atoms (also known as the atomic theory) by using models to explain the motion of particles in solids, liquids and gases.
Objectives:
Essential Question: How does the arrangement of a substance’s molecules determine its state of matter?
 Identify and describe the arrangement of molecules in each state of matter.
 Create a model of atoms to explain the motion of particles in solids, liquids, and gases.

2. It’s what the world is made of.
Matter:
It’s what the world is made of.
Here are some notes

3. What is matter?
Matter is anything that has mass and takes up space.

4. What do you know about matter?
Gases
Solids
Liquids

5. Solids Solids have definite shape and definite volume.
Solids have mass.
Solids take up space.

6. Particles in Solids: Are packed tightly together
Have very little energy
Vibrate in place

7. Liquids
Liquids take the shape of their container and have definite volume.
Liquids have mass.
Liquids take up space.

8. Particles in Liquids: Are loosely packed Have medium energy levels
Particles flow around each other

9. Gases
Gases spread out to fill the entire space given and do not have definite volume.
Gases have mass.
Gases take up space.

10. Particles in Gases:
Move freely
Have LOTS of energy

11. Plasma Lightning is a plasma.
Used in fluorescent light bulbs and Neon lights.
Plasma is a lot like a gas, but the particles are electrically charged.

12. Particles in Plasma: Are electrically charged
Have EXTREMELY high energy levels

13. What would it take for matter to move from one state to another?
STATES of matter?
What would it take for matter to move from one state to another?

14. Energy determines the state!

15. Add or Subtract Energy. . .
When energy is added, particles move faster!
When energy is taken away, particles move slower!

16. Solid + Energy = ?
When energy is added to solids, they become liquids!
Examples?

17. Liquid + Energy = ?
When energy is added to liquids, they become gases!
What examples can you think of?

18. Changing States State change Phase change Physical change
There are several names for matter changing states:
State change
Phase change
Physical change