Matter

What is matter?
-Anything that has mass and takes up space
                              
                                                                        MATTER
proporties of matters
Three states:
- Solid: dont change shape easilyexperiences small change in volume when heated
- Liquid: takes the shape in the container and experience
- gases: takes the shape of the container and experiences drastic in volumn when heated

-Pure Substance 
        -one set of proporties
        -one kind of particle    
         /                              \
 element                         compound          
 - (cannot                        -made of element
be elecomposd)            -chemically combined
-made of  atom              -smallest particle is molecule
   /                  \                           /                     \
metal      non-metal                  Ionic               covalent



-Mixture
       -more than on set of proporties and substances
        -physically combined
         /                               \
homogeneous                     heterogeneous  
-uniform throughour             -not uniform
-appears to have only          -appears to have more than one components
one component                   Example: water+oil
Example: Solution


Physical Change                                                        Chemical Change
-no new substance is formed                                       -new substance is produced
-chemical composition doesnt change                          -irreversible
-reversible
Example:meliting / boiling point                                    Example:buring+cooking+rotting

Scientific Notation&Evaluation

Scientif notation=Exponential notation

•  is used to express very large or small numbers to be convinient.
•  In scientif notation, all numbers are written like this: a × 10^b ((1 ≤ |a| < 10))



       Ex: Express in scientific form:

           Ex: Express in standward form:

           

            

            

            

E notation:

           Most calculators and many computer programs present very large and very small results in scientific notation. Because superscripted exponents like 10⁷ cannot always be conveniently represented on computers, typewriters and calculators, an alternative format is often used: the letter E or e represents times ten raised to the power of, thus replacing the × 10, followed by the value of the exponent.

Calculator:      
   Ex:    2.5---->Exp8----

                      ----> Ee8

                            8

Evaluate:

Even more unitary rates: If

Ex: Convert:

A:

B: