1. Bose-Einstein Condensate
States Of
Matter
Solid
Plasma
Liquid
Bose-Einstein Condensate
Gas

2. What was the Bimetallic Strip?
Metallic = Metal
Bi = TWO
Bimetallic strip is a strip of two metals

3. Why does it bend? Kinetic Theory of Matter states:
All Matter is made of tiny particles that are in a constant state of motion.

4. Why does it expand? Thermal Expansion:
Most Matter will expand as molecules gain energy and contract when energy is lost.
About nanometers
( m)
About
1.0 nanometers
( m)

5. Why does it expand?
If you have only ONE atom, then the change is extremely small and hard to notice. But…
If you have 100’s of atoms, then all of those little individual changes will quickly add up to a “Large” change.

6. Why does it expand?
Thermal Expansion Joints are all around us.

7. Now look at your data and calculate your LED
Why does it expand?
Let’s Calculate just how much your Aluminum Bar Expanded?
The Arrow Pin had a diameter of 3mm (r = 1.5mm)
Find the Arrow Pin’s Circumference (c)= 2πr
C = 9.4 mm
C = 360°
9.4 mm
360°
Linear expansion distance (LED) = Δθ x 9.4 mm
360°
Now look at your data and calculate your LED

8. Some things just expand faster than others.
Why does it bend?
Thermal Expansion:
All matter has a different rate of Thermal expansion.
Some things just expand faster than others.

9. Examples

10. Solids Solids have a Definite Shape Closely packed
Volume:
Solids have a Definite Volume
Molecules:
Closely packed
Do not change position easily

11. Drawing of Solid Molecules

12. Liquids Liquids take the shape of their container Closely packed
Volume:
Liquids have a definite Volume
Molecules:
Closely packed
They are able to move over one another

13. Drawing of Liquid Molecules
Time 1
Time 2
Time 3

14. Gases: Gases take the shape of their entire container Spread apart
Volume:
Gases volume is equal to the volume of the container
Molecules:
Spread apart
They move freely in all directions

15. Drawing of Gas Molecules
Time 1
Time 2
Time 3

16. Plasma Plasma take the shape of its entire container Same as Gases
Volume:
Plasma’s volume is equal to the volume of the container
Molecules:
Same as Gases
but have (+) and (-) charged particles

17. Drawing of Plasma Molecules+ -