Intro to Chemistry

Scientific Notation Review your handout from before 10 = 1 x = 1 X 10 3 = 10 x 10 x 10.1 = = 1/10.01 = = 1/100 = 1/ = = 1/1000 = 1/ = = 2(1000) = 2 x 10 3 ↑ any number between 1-10 = 10 +or-

600,000 = 6 x ,000,000 = 1.7 x = x = _______________.0036 = ___________________ = _________________ = ______________

Multiplying using exponents = add them together 10 6 x 10 2 = x 10 4 x 3 x 10 3 = 6 x 10 7 (5 x 10 2 ) (7 x 10 5 ) = 35 x 10 7 = 3.5 x 10 8 ↑ only 1 number before the decimal in scientific notation

Dividing Exponents = subtract them 10 5 / 10 3 = x 10 5 / 2 x 10 9 = 4 x If you are adding, , do not add unlike exponents Instead, convert back to original form then add So, 10 2 = 100 and 10 3 = 1000 which = = 1100 = 1.1 x 10 3