1. Chapter 14 Lesson 1 Pages E74 – E79
STATES OF MATTER
Chapter 14 Lesson 1
Pages E74 – E79

2. Objectives Identify some properties of each state of matter.
Recognize that matter exists in three familiar states, or phases.

3. Main Idea
Matter can exist in three familiar states: solids, liquids, and gases. These states are determined by the motion and arrangement of particles.

4. States of Matter It is the physical form that matter takes up
There are three familiar states:
Solid
Liquid
gas

5. Particles and States of Matter
All matter is made up of atoms & molecules
The movement of these particles determines the state of matter
Solids: particles are held together very closely. They vibrate in place.
Liquids: particles can slip past each other and move about.
Gases: particles are spread very far apart. Constantly moving and bouncing off one another.

6. SOLIDS A form of matter that has a definite shape and volume
One property of a solid is they keep their shape.
Another property is definite volume.
Foam football is a solid. When squeezed it appears to change shape & volume, but it is actually the pockets of air that change.

7. LIQUIDS
A form of matter that has a definite volume, but no definite shape.
Liquid will change shape to match the shape of its container.
No definite shape because their particles are not held rigidly in place.
Any substance whose particles can flow freely is called a fluid.

8. GAS A form of matter that has no definite shape or volume
The particles are constantly moving & bouncing off each other
When gas is placed in a container, the particles spread out to fill the container and take its shape.
The particles are free to move and flow, which means all gases are fluids

9. GAS Unlike solids & liquids, gases are very compressible.
Gases have much lower densities than liquids & solids.
Objects with lower densities float in fluids with higher densities.

10. STATES OF MATTER Property Solid Liquid Gas Definite Shape Yes No
Definite Volume
Compressible
Fluid
Particle Spacing
Close
Varies

11. REVIEW

12. What two factors determine the state of matter of an object or sample?
The arrangement & movement of the particles

13. What are the three familiar states of matter?
Solid
Liquid
Gas

14. Describe solid in terms of shape and volume.
Definite shape and volume

15. Describe liquids in terms of shape and volume.
Definite volume, no definite shape

16. Describe gases in terms of shape and volume.
No definite volume, no definite shape

17. Solids and liquids are similar because both
A. Are fluids.
B. Are compressible
C. Have no definite shape.
D. Have definite volume.

18. Solids and liquids are similar because both
D. Have definite volume.