Lab Equipment
Measurements
Significant Figures
Density
Precision, Accuracy and Error
100
The lab equipment that is used for measuring the mass of a substance.
What is a balance?
100
The amount of liquid.
What is 89.0 +/- 0.5mL?
100
9.0870
What is 5 significant figures?
100
The mathematical expression for mass to volume ratio.
What is Density = mass/volume?
100
The relative closeness in measurements across repeated trials.
What is precision?
200
The lab equipment used for stirring two or more substances together.
What is a stir rod?
200
The absolute value is determined by place a 1 in the smallest scale value of the measuring device.
What is the absolute uncertainty of a digital device?
200
0.00560
What is 3 significant figures?
200
An object's mass is 1.78g and its volume is 1.0 mL.
Density = 1.8g/mL
200
The range for the measurement 9.00 +/- 0.05mL
What is 8.95-9.05mL?
300
A student is told to use this piece of a equipment to measure a specific volume of water.
What is a graduated cylinder?
300
The absolute uncertainty for the graduated cylinder shown here:
What is +/-0.05mL?
300
23.870 rounded to 2 significant figures.
What is 24?
300
The phenomena observed in this image. 
What is buoyancy?
300
The type of error observed when:
the target value is 12 +/- 1
Trial 1 = 8
Trial 2 = 13
Trial 3 = 10
Trial 4 = 14
What is random error?
400
The lab equipment seen here:
What is a Bunsen burner?
400
The measurement shown here with absolute uncertainty:
What is 126.4 +/- 0.1?
400
13.450 + 12.62 =
What is 26.07?
400
An object is placed on a balance and is found to have a mass of 57.00g. Then, a graduated cylinder is filled with 200mL of liquid. The object is placed in the graduated cylinder and the liquid rises to 243mL.
What is the object has a density of 1.3g/mL?
400
Characterization of a set of data that has 2 trials hit the target value and 2 trials within +/-0.1 of the target value.
What is high accuracy and high precision?
500
The purpose of the lab equipment shown here:
What is a base to attach clamps (test tube or ring) to?
500
The scale divided by 2.
What is the absolute uncertainty of an analog device?
500
0.0090 x 1.234 =
What is 0.011?
500
The order in which these items would layer themselves in a graduated cylinder, from top of the cylinder to the bottom:
Honey (density 1.42g/mL)
Oil (density 0.863g/mL)
Water (density 1.00g/mL)
What is oil, water, honey?
500
The type of error described:
A student conducts an experiment measuring the amount of gas produced in a reaction. The student is supposed to take the measurement when the reaction is finished; however, the student is impatient and reads the measurement before it is finished.
What is systematic error?