Unit 1 Measurements Exam Flashcards
where do you measure liquids?
at the center of the meniscus
how to calculate sig figs
All nonzero digits are significant. …
All zeros that are found between nonzero digits are significant. …
Leading zeros (to the left of the first nonzero digit) are not significant. …
Trailing zeros for a whole number that ends with a decimal point are significant.
how to calculate percent error
|measured value - true value|/ true value
accuracy
how close you are to the true value
precision
how close together a group of measurements(of the same thing) are to each other
volume
m^3 the amount of space that an object takes up
density
m/v
weight
force acting on an object due to gravity
length
meter [m]
mass
kilogram [kg]
time
second [s]
temperature
kelvin [K]
amount of substance
mole [mol]
luminous intensity
candela [cd]
electric current
ampere [A]
1 mL is equal to…
1 cm^3
1 L is equal to…
1 dm^3
what do you measure weight with?
scale
what do you measure mass with?
balance
calculate F from C
F = 9/5(C+32)
calculate C from F
C = 5/9(F-32)
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tera (10^12), giga (10^9), mega (10^6), kilo (10^3), hecta (10^2), deka (10^1), deci (10^-1), centi (10^-2), milli (10^-3), micro (10^-6), nano (10^-9), pico (10^-12)
