PASCO ME-8569 DENSITY SET - Manual (Page 15)

scientific 11
012-04774A
Experiment #4: Specific Heat
MASS OF CUP =
Table 4.1: Data
2. While waiting, find the mass of a dry styrofoam cup and
then prepare a styrofoam cup of cold water (about 3
°
C below
room temperature) into which the heated object can be
completely submerged. When the object has finished
heating, record the temperature of the cold water to the
nearest tenth of a degree, then record the temperature of the
boiling water, and quickly transfer the heated object from the
hot water to the cold water (See Figure 2). Record in Table
4.1.
EQUIPMENT REQUIRED:
Density set: Aluminum and Brass cylinders and blocks
String (SE-8050)
Beaker for heating water
Styrofoam cup
Cold water
Triple-beam balance (SE-8708)
Bunsen burner
Heating stand
Thermometer (SE-9083)
PURPOSE:
This experiment shows that the specific heat of a material
depends on the type of material but not on the amount of
material.
PROCEDURE
The specific heat, c , of a material is defined to be the amount
of heat needed to raise the temperature of one gram of the
material one degree Celsius. To measure this heat, the
method of mixtures will be used. The following procedure
will be repeated for four objects (aluminum cylinder,
aluminum block, brass cylinder, and brass block):
1. Heat a beaker of water to boiling. While the water
continues to boil, hang the object by a string so that the
object is completely submerged in the boiling water but it is
not touching the bottom of the beaker. Allow the object to
come to equilibrium with the boiling water (wait about 5
minutes). See Figure 1.
Figure 1: Heating Setup
Submerge mass
in water
OBJECT
HOT
TEMPERATURE
COLD
TEMPERATURE
EQUILIBRIUM
TEMPERATURE
MASS OF
WATER
AL. CYL.
AL. BLOCK
BRASS CYL.
BRASS
BLOCK