Download - Report for Hydrometer
Report for hydrometer
Group 5
Group 5 members:Wendy Lim Yie Tiing (960110-13-
6290)Wong Ching Seng (960806-13-6395)Halmen Hu Hong (960807-13-6119)Shirley Dayang Paterick (961005-13-
5936)
What is a
Hydrometer??
A hydrometer is an instrument used to check the relative
density of a liquid ie, to see if one liquid is denser than
another. This instrument rises and sinks in the liquid according to its density. Hydrometer will sink deeper in the less dense liquid but float higher in the
denser liquid.
Aim:
• Used to check the density of liquid.
ListOf
Materials
Beer
Beaker
Tap water
Soil Straws Plasticine
CookingOil
Procedure
First, use a bit of plasticine at the end of the straw.
Then, it will be like these.
Furthermore, add some soil into the straw to add some
weight.
A simple homemade hydrometer is done. Then
we should use it to test different density of liquid.
We should prepare a marker pen to plot
the level.
Pour a glass of tap water into a beaker.
After the beaker fill with water.
Now vertically stand the straw in the tap water in
such a way that the end with plasticine is below the water
surface.
Mark the height of the straw above water
surface.
Then, pour the tap water out and wipe dry inner of
the beaker with tissue. Next, we use the
homemade hydrometer test the density of beer.
Pour a glass of beer into a beaker.
Now vertically stand the straw in the beer in such a
way that the end with plasticine is below the
water surface.
Mark the height of the straw above beer surface
on the same straw.
Mark for:
Tap water
Beer
Next, let us test with cooking oil.
Now vertically stand the straw in the cooking oil in
such a way that the end with plasticine is below the water
surface.
Mark the height of the straw above cooking oil
surface on the same straw.
Mark for:
Tap water
Beer
Cooking Oil
Discussion
Mark for:
Tap water
Beer
Cooking Oil
Generally, density of water is about 1,000.00 kg/m³,
density of cooking oil is less than
water and density of beer always
more than water.
Therefore, the mark of cooking oil will be on top, the mark for
water will be second and the mark for beer will be last. This is because
the density of cooking oil is the lowest and the density of the beer is the highest in these three types
liquid.
Conclusion
In a nutshell, the density of cooking oil is the lowest because the hydrometer sink denser and the density of beer is the highest because the hydrometer float higher in these three
types of liquid.
The End