1. Instructional Objective: 1. Explain the properties of matter 2
Instructional Objective: 1.Explain the properties of matter 2.Identify elements and compounds. 3.Compare and contrast solutions, colloids and suspensions. 4.Learn how to separate the substance.

2. Classification of Matter

4. What is a Pure Substance?
Can be an element or a compound
Cannot be broken down into simpler components
Always maintain the properties of the original substance
Ex: helium,aluminum,water and salt

5. Elements
substance that cannot be chemically broken down into simpler substances
An element is made up of only one kind of atom.
Are 90 elements found in nature.
More than 20 other elements have been made in labs.
Some elements are unstable and exist only for short time.

6. Elements Examples of Elements:
Elements can be found on the periodic table
Carbon (C)
Gold (Au)
Aluminum (Al)

7. Compounds
substance made up of two more elements that are chemically combined in a fixed ratio
The properties of a compound are different from the properties of the elements that make it up
Ex: Water is made of 2 hydrogen and 1 oxygen (both elements are gas)

8. Compounds Examples of Compounds: Made up of more than one element
Water (H2O)
Sugar
C12H22O11
Table Salt
(NaCl)
Hydrogen Peroxide
H2O2

9. Mixtures
Two or more substances that can be separated by physical means
Heterogeneous Mixture: A mixture that has different substances that can be distinguished easily
Homogeneous Mixture: A mixture that has different substances blended together evenly.
Water (H2O)
and
Acetic Acid (CH3CO2H)

10. 1.Heterogeneous mixture (unevenly mixed )
Ex: salad, milk, blood etc…….
2.Homogeneous mixture (evenly mixed)
Ex: any flat soft drink

11. Instructional Objective: 1
Instructional Objective: 1..Compare and contrast solutions, colloids and suspensions. 2.Learn how to separate the substance.

12. Colloids( come from a Greek word for glue)
A homogeneous mixture
Is a type of a mixture that never settles
Particles are larger than those solution but not heavy enough to settle
Ex: milk , gelatin, paint, fog, smoke etc…

13. How can you detect colloids?
By it’s appearance.
By passing a beam of light through it
The particles are large enough to scatter light
Ex: fog, shampoos, gelatins

14. Tyndall effect
The scattering of light by colloidal particles is called the tyndall effect

15. Solutions, Colloids, and Suspensions
Solution: Extremely small particles that will not settle to the bottom of a container
Colloid: A mixture that never settles but have larger particles than a solution and whose particles never settle (fog, smoke)
Suspensions: A mixture that contains larger particles that will settle to the bottom with time (muddy water, orange juice)

16. What are physical and chemical changes?
physical change: change that does not produce new substances
chemical change: change that produces new substances

17. Instructional Objective: 1. Identify the state of matter
Instructional Objective: 1.Identify the state of matter. 2Compare the heat of fusion and heat of vaporization

18. Physical Changes
A physical change is a change in size, shape, or state of matter.
In a physical change – the material you are changing is the same thing at the beginning and end of the change

19. Properties of Matter
Physical Properties-with out changing the appearance
Chemical Properties- always indicate a change

20. Physical Properties.
Identifying the content of a substances without changing it.
Can identify by their appearances.
Ex: shape, color and state of matter.
By their behavior
Ex: melting point ,freezing point, attraction of the particles etc……

21. Physical Properties. Viscosity (resistance to flow.)
Conductivity (ability to allow heat or current to flow)
Malleability (ability to be hammered)
Melting points (temperature at a substance change from solid to liquid)
Boiling points ( temperature at a substance change from liquid to gas)
Density (Use to identify a pure substances)

22. Date :1/25/11 Instructional Objective: 1
Date :1/25/11 Instructional Objective: 1. Identify mixtures and learn how to separate them 2.. Learn about chemical change and chemical properties Review Questions: 1.What is a compound ? Other Instructions: Lab :work on Lab 8, Pg# 17 Homework: Do the work sheet(Use your notes)

23. Chemical Change
A chemical change is a change that changes a material into something new
Burning paper (ash, smoke, fire)
Sometimes you must rely on clues
Bubbles
Heat produced
Change in color
Smoke

24. raw egg becomes cooked egg
                                
raw egg becomes cooked egg
                      
cake mix becomes cake
paper becomes ash
steel becomes rust

25. What is a Chemical properties?
Is a characteristic of a substance that indicates the chemical change
Ex: odor, color change,bubbling,foaming etc…..

26. Chemical Properties Flammability Reactivity Change of color Odor
Production of Gas (bubbling)
Production of a precipitate (producing solid matter)

27. Separate the substances using their Physical properties:
Ex. Size(Size of a poppy seed and sunflower seeds.)
Ex: color of the seed
Ex : attraction of the iron to the magnet

28. Separate the substance using their physical change
Distillation:
* is process for separating substance in a mixture by evaporating a liquid and recondensing it’s vapor.
Ex. Separate the salt from saltwater.

29. Separating colors
Chromatography method can be used

30. How can a suspension be separated?
filtration: separation of particles in a suspension by passing through the filter paper or some other porous material

31. Separating substances using chemical change
Ex: silver tarnish due to the reaction of silver with sulfur compound in the air forming sliver sulfide.
Using chemical reaction sulfide can be removed to polish the sliver.

32. Conservation of Mass
In any type of change (physical or chemical), the combined mass of the material does not change
This is called the “Law of Conservation of Mass”
Why do ashes have less mass that the wood that was burned?