Metric System
Uncertainty & Error
Sci Not & SF
Accuracy, Precision, Temperature
Density
100
The correct SI unit for length
What is meter?
100
The balance records all measurements 1.5 g too high. This is what type of error?
What is systematic error?
100
The number of significant figures in 0.00700 g.
What is three significant figures?
100
These data are accurate, precise, neither, or both:
0.345 g
0.344 g
0.346 g
0.344 g
What is precise?
100
The density of an object with a mass of 45.6 g and a volume of 26 mL
What is 1.8 g/mL?
200
The correct SI unit for amount of substance
What is mole?
200
The balance fluctuates with the air currents. This is what type of error?
What is random error?
200
2.45 x 10-4 cm in standard notation.
What is 0.000245 cm?
200
These data are accurate, precise, neither, or both:
the density of aluminum = 2.71 g/cm3
7.84 g/cm3
7.83 g/cm3
7.86 g/cm3
7.85 g/cm3
What is precise?
200
The volume of an object with a density of 7.85 g/mL and a mass of 36.5 g.
What is 4.65 mL?
300
Convert 215 m to km.
What is 0.215 km?
300
The measurement of this balance.
What is 0.573 g?
300
The number of significant figures in 1250 g.
What is three significant figures?
300
Temperature units of Jemicy thermometers.
What is Celsius?
300
The mass of an object with a density of 2.710 g/mL and a volume of 26.7 mL.
What is 72.4 g?
400
Convert 1.25 s to ms.
What is 1250 ms?
400
The measurement for this graduated cylinder.
What is 91.1 mL?
400
Round 0.005637 mL to two significant figures.
What is 0.0056 mL?
400
The theoretical lowest temperature that exists.
What is absolute zero?
400
An object has a mass of 24.6 g and a volume of 2.75 mL. It is which substance:
Water: 1.00 g/mL
Aluminum: 2.71 g/mL
Steel: 7.85 g/mL
Copper: 8.94 g/mL
What is copper?
500
Convert 0.00640 kg to mg.
What is 6.40 x 103 mg?
500
The measurement of this graduated cylinder.
What is 6.32 mL?
500
Round 35,800 m to four significant figures.
What is 3.580 x 104 m?
500
These data are accurate, precise, neither, or both:
the density of steel is 7.85 g/cm3
7.84 g/cm3
7.85 g/cm3
7.85 g/cm3
7.86 g/cm3
What is both accurate and precise?
500
You calculate your density for tin as 6.94 g/mL. The literature value is 7.31 g/mL. Find the percent error.
What is 5.06%?