1. Scientific Notation

2. Scientific Notation Also called “Exponential” Notation
A way to write very large and very small numbers (or measurements) without having to write a lot of zeros
Form is: N x 10n
where 1<N<10
and n is an integer
For example: a mole = 6.02 x 1023 particles

3. Any number or measurement can be written as scientific notation
Ex is 3.50 x 100
Ex is 5.32 x 10-1
Ex is x 104
To put numbers into and out of scientific notation, move the decimal and follow LARS when adjusting the exponent
“Left Add Right Subtract”

4. Try these with me…put into scientific notation using LARSkg mL
Now do set A (first half) on practice WS

5. Try these with me…put into scientific notation using LARS
7.99 x 10-6 g
3.00 x 108 m/s
4.50 x 10-2 mm
x 105 J
Now do set A (second half) on practice WS

6. Remember Sig. Figs.
The reason that scientists use scientific notation (besides the fact that it can be used to represent very large and very small numbers easily) is that it highlights the significant figures.
All the sig figs go in “N”!
Now do set B on practice WS