Significant Figures
Percent Error
Density
Scientific Notation
Conversions
Lab
100
How many Sig Figs is 3467?
4
100
Jack was directed to weigh a 550 g mass on the balance. After diligently goofing off for ten minutes, he quickly weighed the object and reported 558 g. What is the percent error?
1.5%
100
What is the density of a mineral if 427 g of the mineral occupy a volume of 35.0 mL.
12.2g/mL
100
Convert into Scientific Notation:
6894
6.894 x 103
100
3.4mm=_______cm
0.34cm
100
What is the metric unit for mass?
grams (g)
200
How many Sig Figs is 50.8?
3
200
Sean was told to measure 23 cm of copper wire to use in an experiment. Since his ruler only measured to 21 cm he used this amount of wire and his experiment didn’t go as planned. What is the percent error?
-8.7%
200
What is the mass of 25.0 cm3 of gold?
483g
200
Convert into Scientific Notation:
0.00342
3.42 x 10-3
200
234.45hL=________L
23445L
200
What Table on your Regents Chemistry Reference Table has both the equations for percent error and density?
Table T
300
How many Sig Figs is 0.00976?
3
300
Manny was assigned to determine the density of a sample of nickel metal. When he finished, he reported the density of nickel as 6.19 g/ml. However, Charlotte knew the density of nickel was 6.44 g/ml. What is the percent error?
-3.88%
300
What mass of Hg will occupy a volume of 50.0 mL?
678g
300
Convert into Scientific Notation:
98,500
9.85 x 104
300
34g=_________mg
34000mg
300
What is this called?
Graduated Cylinder
400
How many Sig Figs is 55,060,000?
4
400
An experiment to determine the volume of a "mole" of a gas was assigned to Ben. He didn't read the experiment carefully and concluded the volume was 18.7 liters. Lily knew he should have obtained 22.4 liters. What is the percent error?
-16.5%
400
A sample of metal has a volume of 45 cm3 and a mass of 121.5 g. Find the density of this sample and use Table S to identify this substance.
2.7g/cm3
Aluminum
400
Convert into an ordinary number:
6.540 x 107
65,400,000
400
0.0345L=__________cL
3.45cL
400
What is the measurement reading?
23.5 mL
500
How many Sig Figs is 0.000000000070800?
5
500
Ella measured the volume of her soda before she drank it for her lunch. She measured the volume of the 8 oz. bottle to be 11 oz. What is the percent error?
37.5%
500
Mercury (13.550g/mL), water (1.000g/mL), carbon tetrachloride (1.595g/mL), and cottonseed oil (0.926g/mL) are placed in a graduated cylinder and layers formed. Identity the order of layers from top to bottom.
Cotton Oil, Water, Carbon Tetrachloride, Mercury
500
Convert into an ordinary number:
8.5 x 10-8
0.000000085
500
34.456Km=___________mm
34456000mm
500
What is the hottest part of the bunsen burner flame?
C