Unit 1 Measurements Exam

Question 1

where do you measure liquids?

Answer 1

at the center of the meniscus

Question 2

how to calculate sig figs

Answer 2

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.

Question 3

how to calculate percent error

Answer 3

|measured value - true value|/ true value

Question 4

accuracy

Answer 4

how close you are to the true value

Question 5

precision

Answer 5

how close together a group of measurements(of the same thing) are to each other

Question 6

volume

Answer 6

m^3 the amount of space that an object takes up

Question 7

density

Answer 7

m/v

Question 8

weight

Answer 8

force acting on an object due to gravity

Question 9

length

Answer 9

meter [m]

Question 10

mass

Answer 10

kilogram [kg]

Question 11

time

Answer 11

second [s]

Question 12

temperature

Answer 12

kelvin [K]

Question 13

amount of substance

Answer 13

mole [mol]

Question 14

luminous intensity

Answer 14

candela [cd]

Question 15

electric current

Answer 15

ampere [A]

Question 16

1 mL is equal to…

Answer 16

1 cm^3

Question 17

1 L is equal to…

Answer 17

1 dm^3

Question 18

what do you measure weight with?

Answer 18

scale

Question 19

what do you measure mass with?

Answer 19

balance

Question 20

calculate F from C

Answer 20

F = 9/5(C+32)

Question 21

calculate C from F

Answer 21

C = 5/9(F-32)

Question 22

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Answer 22

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)