Chapter 1 - Significant Figures and Scientific Notation

Question 1

Significant figures

Answer 1

Meaningful digits in a measured or calculated quantity

Question 2

Scientific Notation Add/Subtract

Answer 2

Make sure the exponents are the same. If not, move the decimal so the exponents match. Then, add the first numbers together and keep the notation
(4.3110^4)+(3.910^3)=(4.3110^4)+(0.3910^4)=4.70*10^4

Question 3

Scientific Notation Multiplication/Division

Answer 3

Multiply first numbers. Add exponents together. e.g. 10^4+2=10^6
Divide first numbers subtract exponents
10^7-5=10^2
10^2-(-3)=10^5

Question 4

Significant Figures rules

Answer 4

Any # not zero is sig.

Zeros between nonzeros are sig

Zeros to left of first nonzero are not sig

If # greater than 1, all 0s to right are sig

Trailing zeros for #s that do not have decimal points may or may not be sig.

Question 5

Significant figures add/sub

Answer 5

Answer cannot have more digits to right of decimal than wither of original #s

Question 6

Significant figures multi/divide

Answer 6

of sig. figures in final product is determined by original # with smallest # of sig. figures