PASCO Specialty & Mfg. ME-8569 User Manual download pdf (Page 15)

scientific

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

1 2 ... 10 11 12 13 14 15 16 17 18

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