- mass- kilogram, kg
- volume- liter, L
- length- meter, m
- time- second, s
- temperature - Kelvin, K- neat thing about Kelvins no negative values, cannot get colder than absolute zero.

Density- is an intensive property of the object, that is it does not depend on the "amount" of the object. D=mass/volume. Be sure you can calculate for any variable in the density formula. Refer back to your worksheet for problems.

Factor-Label Method- be sure to review this. 100cm= 1m, therefore it also can be written:

1m/100cm or 100cm/1m.

Scientific notation

- when moving decimal to the right- negative exponent
- when moving decimal to the left- positive exponent
- after moving decimal only one number to the left of the decimal point.
- when multiplying add exponents, dividing subtract

450000 4.5 x10 5 ( -6 and 5 are exponents)

3 x 10 3 X 4 x 10 -6 12 x 10 3 +(-6) 12 x 10 -3 1.2 x 10 -2

8 x 10 4 / 2 x 10 -5 4 x 10 4 - (-5) 4 x 10 9

Significant Figures

Refer to rules in your notebook. In multiplication and division your answer can only have as many sig figs as the least precise number ( lowest number of sig figs)

ex. 0.001 1 SF

0.00100 3 SF

0.001001 4 SF

100 1 SF

101 3 SF

101.0 4 SF

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