week 1-2

Question 1

giga- (G)

Answer 1

10^9

Question 2

mega- (M)

Answer 2

10^6

Question 3

kilo- (k)

Answer 3

10^3

Question 4

deci- (d)

Answer 4

10^-1

Question 5

centi- (c)

Answer 5

10^-2

Question 6

milli- (m)

Answer 6

10^-3

Question 7

micro- (weird u)

Answer 7

10^-6

Question 8

nano- (n)

Answer 8

10^-9

Question 9

pico- (p)

Answer 9

10^-12

Question 10

(scientific notation) move decimal to right

Answer 10

10^-x

Question 11

(scientific notation) move decimal to left

Answer 11

10^x

Question 12

how to convert to scientific notation?

Answer 12

find largest sig fig & then move decimal to right or left until largest sig fig is in ones place

Question 13

all non-zero sig figs are…?

Answer 13

significant

Question 14

sandwiched zeros are…?

Answer 14

significant

Question 15

leading zeros are….?

Answer 15

not significant

Question 16

trailing zeros are…?

Answer 16

only significant if there’s a decimal (count every 0 if there’s a decimal)

Question 17

rule for addition & subtraction (sig figs)

Answer 17

only keep sig figs up to largest uncertain digit

Question 18

rule for multiplication & division (sig figs)

Answer 18

keep same # of sig figs as # w/ least amount of sig figs

Question 19

accuracy

Answer 19

how close a measure is to its true value

Question 20

precision

Answer 20

how close a sample of measurements are to each other

Question 21

what if uncertainty not given?

Answer 21

last valuable digit in measurement has uncertainty of 1

Question 22

homogenous mixture

Answer 22

evenly proportioned throughout

Question 23

heterogenous mixture

Answer 23

unevenly proportioned throughout