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1. Warm Up In the kitchen you will find three different forms of water.
What are these forms of water and where would you find them?
2. States of Matter Chapter 3 – Sec 1
Part A
Unless otherwise specified all pictures and information come from: Holt, Rinehart and Winston (2001) Holt Science & Technology: California, Physical Science Harcourt:Austin, TX
3. Objectives – New Terms Page 60
States of matter
Solid
Liquid
Gas
Pressure
Boyle’s Law
Charles's Law
Plasma
4. Objectives Describe the properties shared by particles of all matter
Describe the four states of matter discussed in this lecture.
Describe the differences between the states of matter.
Predict how a change in pressure or temperature will affect the volume of a gas.
5. States of Matter States of matter are the physical forms in which a substance can exist.
The particles that make up matter move at a certain rate.
How fast they move and how strongly they are attracted determines the state.
6. 4 States of Matter 4 states of matter:
Solid
Liquid
Gas
Plasma
7. 4 States of Matter 4 states of matter:
Solid
Liquid
Gas
Plasma
8. States of Matter Solids
Have definite shape and volume
Particles are very close together
Particles have strong attraction to one another
They are still moving but they can not overcome the attraction between them
9. States of Matter Two types Solids
Crystalline
Orderly 3-dimensional arrangement of atoms or molecules
Examples: ice, iron, diamonds
Amorphous
Their atoms or molecules are not in any particular order
Examples: rubber & wax
10. States of Matter Liquid
Change shape but not volume
They conform to any shape of the container they are in
Particles move faster than a solid
Particles move fast enough to overcome some of their attraction between them
Slide past each other to take the shape of the container
11. States of Matter Properties of a Liquid
Surface tension
Is the force acting on the particles at the surface of a liquid
This tension is what forms drops
Different liquids have different surface tensions
12. States of Matter Properties of a Liquid
Viscosity
Is the liquids resistance to flow
The stronger the attraction between particles the more viscous a liquid is
13. States of Matter Gases
Matter changes in both shape & volume
Particles move fast enough to break away from each other
Collide frequently with one another
There is empty space between particles
14. Plasmas Plasma is the state of matter that does not have a definite shape or volume and whose particles have broken apart.
Conduct electric current
Found in lightning and fire
Aurora borealis is a result of plasma from the sun
15. Surface Tension experiment I need a volunteer from each group to come up and get a 50ml beaker with water in it.
And an eyedropper and penny for each person in your group.
16. Surface tension experiment Now slowly one drop at a time see how many drops of water you can get to stay on the penny.
Count how many drops it takes.
How many drops did it take?
(EVERYONE DOES THEIR OWN. ?)
17. Homework Workbook Chapter 3 Section 1 # 1-18
Bring an empty soda can for experiment.
18. Warm Up Think of a balloon, as you add more air to the balloon, what happens to the balloon?
19. States of Matter Chapter 3-1
Part B
Unless otherwise specified all pictures and information come from: Holt, Rinehart and Winston (2001) Holt Science & Technology: California, Physical Science Harcourt:Austin, TX
20. States of Matter Gas Under Pressure
Pressure is the amount of force exerted on a given area
Think of it as the number of collisions of particles against the inside of the container
When the number of collisions increase, the pressure increases
21. States of Matter Boyle’s Law
For a fixed amount of gas at a constant temperature:
the volume of a gas increases as the pressure decreases
OR
The volume of a gas decreases as the pressure increases
22. States of Matter Charles Law
For a fixed amount of gas at a constant pressure:
The volume of the gas increases as its temperature increases
AND
The volume of the gas decreases as its temperature decreases
23. Here’s a video Let’s take a look at this concept in action
24. Homework http://www.usborne-quicklinks.com/usa/usa_entity_pages/usa_select_link.asp?lang=usa&lvl=2&menu=s73&id=1203&From=16&To=17