Activity No:___
WATER & ALCOHOL THERMOSCOPE APPARATUS
DIY CONSTRUCTION PROCEDURE
Name: ________________________________________Score:_________________
Section: ____________ Group No. ____
Date Performed: _________________
1.) Concept
Water and Alcohol Thermoscope Apparatus was used as instrumental material in
teaching chemistry in determining the boiling point of the liquid. Boiling point or boiling
temperature can be defined as the amount of heat required to boil the liquid. Boiling is a
phenomenon occurs when vapor pressure in the surface of the liquid is equal to the
vapor pressure of the environment. However this setup has limitation, it lacks
thermometer to measure the accurate temperature that cause the water to boil, instead
you will measure the time interval from the start of heating until first formation of bubble,
take note that pressure can be adjusted by pulling or pushing the syringe, to determine
the time difference when the liquid boils. Boiling temperature is directly proportional
to external pressure.
II. Materials/Tools/Supply
Materials
Lengt
h
8’’
12”
10”
No. of
Units
2pcs
2pcs
1pc
30”
Elbow
1pc
3pcs
Tee
fly wood/cardboard
3pcs
1pc
PVC pipe
5”x5”
Materials
Clip
Test Tube
Rubber
Tubing
Cork
Balloon
Stick
Screw
Syringe
Tools
Supply
Hacksaw
Alcohol Lamp
Tape Measure/ Meter Stick
Screw Driver
Marker/Pencil
Sand Paper
match
Rug
Detergent
Description No.
Units
Large
4pcs
20mL
2pcs
37”
2pcs
Hand made
6’’
2pcs
2pcs
60mL
6pcs
1pc
of
IV. Procedure
2.) Measure and cut the following PVC pipe accurately. 8” 2pcs, 10” 1pc, 12”
2pcs, and 30” 1pc.
3.) Polish the edges and connect using Tees, then put the elbow to support as a
base. See fig.1
4.) Attach a piece of wood or cardboard at the Tee that connects 10” pipe and
8”pipe, to support the alcohol lamp. (recommended)
5.) Make a cork using a cutter enough to fit in the test tube. NOTE: make sure it
is tightly fitted to avoid the escaping of gas from the test tube; otherwise
this set-up won’t work reliably.
Water and Thermoscope
Contrction Procedure
6.) Make a hole using a nail similar diameter to the balloon stick. NOTE: nail
should be pre-heated to melt the rubber cork. Warning: Metal conducts heat
easily and release easily. Do not touch the nail with your bare hand, use
rug or plies, otherwise you may hurt.
7.) Install the syringe and the test tube at the pole using clamps and screws.
8.) Insert the balloon stick immediately after the nail was removed from the cork,
while the rubber cork is hot.
9.) To check if there is leak, put water in the test tube, insert the cork tightly and
cover the upper end of the balloon stick with your finger, then invert the test
tube. (Observe if water leaks). If leak was observed, discard the cork and
make another one.
10.) If there is no leak, insert the balloon stick in the rubber tubing, and the
syringe to the other end of the rubber tubing, this set-up is now ready for
activity.
11.)
Your finished set-up may look like in the fig. 2 below.
Water and Thermoscope
Contrction Procedure
Prepared by: Luna, Gumera & Booc.
Group No. 5
Water and Thermoscope
Contrction Procedure