MEASUREMENTS IN CHEMISTRY

The act of comparing an unknown quantity to a standard unit is known as

__________.

• measurement

• dimension

• graduation

• derivation

There are __________ fundamental units in the SI.

• four

• six

• seven

• eight

The SI base unit for temperature is the __________.

• Fahrenheit

• kelvin

• Celsius

• rankin

Units of measurement that are combinations of SI units are called __________

units.

• integrated

• scalar

• graduated

• derived

An evaluation of the exactness of a measurement or a measuring instrument

indicates its __________.

• precision

• percent error

• accuracy

• both accuracy and precision

Your car is traveling at 55.0 mph. What is your speed in kph? (1 mi = 1.609 km)

(a)  

Your car is traveling at 55.0 mph. What is your speed in kph? (1 mi = 1.609 km)

(a)  

What indicates the precision of an instrument and helps scientists report

measurements honestly?

• unit analysis

• significant figures

• scientific notation

• units of measurement

The measurement 0.037 010 m has how many significant figures?

• 6

• 5

• 3

• 4

How many significant figures are in the measurement 4800 cm?

• 1

• 3

• 2

• 4