Data Analysis/Sig Figs

KHDDCM

King Henry died drinking chocolate milk

Unit for volume

cm³ - solid

mL - gas or liquid

Unit for density

g/cm³ -sollid

g/mL - liquid or gas

Water

ice is less dense than liquid water cuz it float

Kelvin temperature scale

kelvin temp = celcius temp + 273

273!!!!!!

why 273??

for an absolute zero.

scientific notation

idk

1,392,000 = 1.392 × 10^6 km

Accuracy

how close a measured value is to an accepted value

precision

how close a series of measurements are to one another

Trailing zeroes

zeroes to the right of a non zero digit: ONLY if held by a decimal point they are significant

Leading zeroes

Series to the left of a non zero digit: NEVER significant 

Addition/subtraction

Answer has the same number of decimal places as the measurement with the least number of decimal places

Multiplication/divison

Answer can only be as precise as the least precise measurement

Multiplication example

8.00 cm(3) * 2 cm (1)= 16.00 cm(1)

= 20 cm²

Addition example

15.55 cm(2)  + 2.0 cm (1) = 17.55(1)

= 17.6 cm