1. States Of Matter
9/15/15

2. Brain Teaser
What word in the English language is always spelled incorrectly?

3. Objectives Students will: Review Properties of matter
Identify the characteristics of a substance
Differentiate among the physical states of matter

4. Review Chemistry is the study of matter.
Matter is anything that has mass and takes up space.
Properties of matter can be physical or chemical properties
Properties that are physical can be observed or measured without changing the sample.
Properties that are chemical CAN’T be observed or measured without changing the sample.
Physical properties can further be divided into intensive and extensive properties
Intensive properties are independent on quantity of sample and all have I’s…density, boiling point, etc…
Extensive properties dependent on how much of a substance you have – like mass, length, weight, volume, etc.

5. Pop Quiz
Observe the object/demo I am demonstrating at the front of the classroom
Identify if the following object/demo is describing a physical or chemical property of that substance.
If physical, identify if it is an intensive or extensive property.
There are 7 questions.

6. 1st object
Aluminum foil
1. Tear it
2. Ball it up

7. 2nd object
3. A penny
On a plate with salt and vinegar

8. 3rd object
4. Vinegar
This beaker of vinegar has a volume of …

9. 4th object
5. A rock
I can find the density of this irregular shaped rock by displacing it in water to measure volume and find its mass by weighing it.

10. 6 and 7
6. An intensive property is _______ on the amount of substance present.
A. dependent
B. independent
7. An extensive property is ______ on the amount of substance present.

11. A substance Is matter that has a uniform and unchanging composition.
Example:
Table salt – has a unique and unchanging chemical composition.
Every sample of table salt will be 100% Sodium chloride
its composition doesn’t change from one sample to another
Not and example:
Ocean water – not a substance b/c samples taken from different locations will have differing compositions.

12. Pretest True or false? 1. A vapor and a gas are the same thing.
2. A liquid conforms to its container.
3. Particles of gas are spaced closer together than particles of a liquid.
4. A solid has definite shape but unchangeable volume.

13. Popcorn read
Starting on page 58
Under states of matter

14. States of Matter four states of matter: solid, liquid, gas, and plasma
state of matter depends on the pressure and temperature at which the matter exists
state is a PHYSICAL PROPERTY

15. Solids definite shape and volume
particles packed close together and vibrate weakly about fixed positions
not compressible
low kinetic energy

16. Liquids definite volume, no definite shape
particles move, slide and flow
particles very close together
non-compressible
more kinetic energy than solids
Liquids

17. Gases no definite shape or volume
particles move rapidly in all directions
low attractive forces between particles
higher kinetic energy than solid or liquid
very compressible

18. Gas

19. Vapor
Refers to the gaseous state of a substances that is solid or liquid at room temperature.
Example:
Steam
b/c at room temp, it’s water
But when heated it’s steam

20. Plasma ionized gas particles
most abundant state of matter in the universe
occurs in stars, lightning bolts, fluorescent lights
occur at temperatures over 5000 degrees C. at normal pressures

21. Physical Changes Tearing paper Breaking ice Breaking a crystal
Crumple Aluminum foil
Balling up foil
Phase changes
Changes that alter a substance without changing its composition.

22. Chemical Changes Iron rusting in the presence of oxygen
Fermentation of juice, sugars and other ingredients to make wine
Production of carbon dioxide gas when vinegar and baking soda combine.
Explode, rust, oxidize, corrode, tarnish, ferment, burn, or rot
The process that involves one or more substances changing into new substances.
AKA – CHEMICAL REACTIONS

23. Chemical Change
substances initially present change into different substances
carbon and oxygen yield carbon dioxide
carbon + oxygen  carbon dioxide
reactants products
C O2  CO2
Law of Conservation of Matter

24. How did you do? Classify the images according to their state of matter 4.

25. Write True or False
1. All matter that we encounter in everyday life exists in one of three physical forms.
2. A solid has a definite shape and volume
3. A liquid has a definite shape and takes on the volume of its container.
4. A gas has both the shape and the volume of its container.

26. 5. The particles in a gas cannot be compressed into a smaller volume
6. Liquids tend to contract when heated.
7. The particles in a solid are spaced far apart.
8. The words gas and vapor can be used interchangeably.

27. Independent Practice
Graphic organizers – what is not finished in class needs to be taken home and done for homework.
Please have your work ready to be checked tomorrow for a grade.