An introduction to the Balance and the Determination of Density
Purpose:
To make measurements and collect data to determine the physical properties of matter; density, volume, and mass.
Materials:
Graduated Cylinder
Balance
Water
Unknown Liquid
Paper Towels
Weighing Paper
Weighed Solid (Rubber stopper)
Procedure:
Part A
Obtain a 10 ml graduated cylinder and measure its mass on the balance. Record.
Pour water inside the graduated cylinder. In other to get the correct measurement of volume, read the bottom meniscus.
Determine and record the mass of the graduated cylinder and the water.
Part B
Remove the water from the graduated cylinder and dry it thoroughly. (Use paper towels to dry the inside and outside of the cylinder)
Pour the “Unknown …show more content…
Calculate the density of the solid used in Part C.
Mass = 16.32 g Volume = 10.20 ml
Density = Mass ÷ Volume
D = 16.32 g ÷ 10.20ml
D = 1.60 g/ml
Check the list provided by your instructor and see if you can identify your unknown liquid from those listed.
I believe my unknown liquid to be Glycerol
The specific gravity of a liquid or solid is found by comparing the density of the liquid (or solid) to the density of water. Calculate the specific gravity of the liquid in Part B.
Specific gravity = density of liquid (or solid) ÷ density of water
Specific gravity = 1.67 g/ml ÷ 1.0 g/ml
Specific gravity = 1.67
Conclusion:
On the basis of my data and calculations, I can conclude that density is a characteristic property of a substance which can be found if the following measurements are known: Mass and Volume.
Error Analysis:
A number of variables can affect an experiment measurements and results. Spilling water while measuring, using a wrong amount of solution, contaminating the measuring utensils, slight miscalibrations in lab instruments, data errors, miscalculating answers are mistakes commonly made in science labs. It is important to keep all these variables in mind during the experiment taking preventive measures to avoid mistakes and obtain the most accurate results
Purpose:
To make measurements and collect data to determine the physical properties of matter; density, volume, and mass.
Materials:
Graduated Cylinder
Balance
Water
Unknown Liquid
Paper Towels
Weighing Paper
Weighed Solid (Rubber stopper)
Procedure:
Part A
Obtain a 10 ml graduated cylinder and measure its mass on the balance. Record.
Pour water inside the graduated cylinder. In other to get the correct measurement of volume, read the bottom meniscus.
Determine and record the mass of the graduated cylinder and the water.
Part B
Remove the water from the graduated cylinder and dry it thoroughly. (Use paper towels to dry the inside and outside of the cylinder)
Pour the “Unknown …show more content…
Calculate the density of the solid used in Part C.
Mass = 16.32 g Volume = 10.20 ml
Density = Mass ÷ Volume
D = 16.32 g ÷ 10.20ml
D = 1.60 g/ml
Check the list provided by your instructor and see if you can identify your unknown liquid from those listed.
I believe my unknown liquid to be Glycerol
The specific gravity of a liquid or solid is found by comparing the density of the liquid (or solid) to the density of water. Calculate the specific gravity of the liquid in Part B.
Specific gravity = density of liquid (or solid) ÷ density of water
Specific gravity = 1.67 g/ml ÷ 1.0 g/ml
Specific gravity = 1.67
Conclusion:
On the basis of my data and calculations, I can conclude that density is a characteristic property of a substance which can be found if the following measurements are known: Mass and Volume.
Error Analysis:
A number of variables can affect an experiment measurements and results. Spilling water while measuring, using a wrong amount of solution, contaminating the measuring utensils, slight miscalibrations in lab instruments, data errors, miscalculating answers are mistakes commonly made in science labs. It is important to keep all these variables in mind during the experiment taking preventive measures to avoid mistakes and obtain the most accurate results