Making Measurements
Name: _____________________
In Chemistry, it is important to record your data showing the correct number of significant figures and units. In
this activity, you will learn how to make correct measurements and to make calculations using the
measurements you collected.
Each group with go to each station and make the necessary observations. Record all your observations with the
correct number of significant figures and units. Do all the calculations considering the rules involving calculations
of measurements.
Station 1. Electronic Balance: (1 and 2 decimal point scale)
Obtain two elements from your teacher, weigh one element on the 1 decimal scale and the other element on the 2 decimal
scale.
Balance
1 decimal point scale
2 decimal point scale
Mass (g)
Calculations:
a. Add the mass record from the 1 decimal point scale to the mass record from the 2 decimal point scale.
Station 2. Centimeter Ruler:
Measure the length, width and height of the rectangular objects. Measure the mass of each object using the electronic balance.
Length
Width
Height
Mass
Object
Calculations:
a. Calculate the volume of the object.
b. Calculate the density of the object.
Station 3. Odd’s and End’s
Record the volumes of fluids in the following containers.
Beaker (250 mL)
Volume (mL)
Erlenmeyer Flask (250 mL)
Test Tube
25 mL Grad.
Cylinder
Making Measurements
Name: _____________________
Station 4. Thermometer
Read the temperature of ice water and boiling water (be careful!)
Ice Water
Boiling Water
Temperature (Co)
Calculations: Convert the temperature that you record into:
a. Kelvin
b. Fahrenheit
Station 5. Burette’s:
Burette #1 and #2 represent the same beaker. Burette #1 represents a burette BEFORE the stopcock has been opened. Burette
#2 represents a burette AFTER the stopcock has been opened and some of the solution has been released. Measure the initial
and final readings.
Initial Volume (mL)
Final Volume (mL)
Burette #1
Burette #2
Calculations:
a. Calculate the change in volume.
Challenge! ~ only if time permits!
Station 6. Measure Density using Archimedes Principle:
Measure the mass of both masses. Fill two 25 mL graduated cylinders to about the 10 mL mark. The actual volume does not
matter, but you need to record the initial volume correctly. Place the mass into the graduated cylinder, and record the final
volume.
Initial Volume (mL)
Final Volume (mL)
Mass #1
Mass #2
Calculations:
a. Calculate the volume of each mass. (mL)
b. Calculate the density of each mass. (in kg/m3)
c. Using your phones, determine the identity of Mass #1 and Mass #2.
Mass (g)
Making Measurements
Name: _____________________