SPECIFIC HEAT

PROBLEM: To determine the specific heat for certain metals.

MATERIALS: Celsius thermometer, styrofoam cup, an old pot or a large metal can, string, water, and the following metals; iron, copper, lead, zinc, aluminum, brass. See earlier lab for where to obtain these metals.

PROCEDURE AND OBSERVATION

	Metal	Weight	Temp. of heated metal	100 g (ml) of water at Room temp	Final Water Temp.  (in cup)	Change in Water temp.       T	Calories Water Absorbed        H = Mass of water         X     T	Temp. Change for Metal ( 100 ° C minus final water temp.	SPECIFIC HEAT Cal/g °C
1	Fe	___ g	100° C	____° C	____° C	____° C	____ Cal	____° C	__ Cal/g °C
2	Cu	___ g	100° C	____° C	____° C	____° C	____Cal	____° C	__ Cal/g °C
3	Pb	___ g	100° C	____° C	____° C	____° C	____Cal	____° C	__ Cal/g °C
4	Al	___ g	100° C	____° C	____° C	____° C	____Cal	____° C	__ Cal/g °C
5	Brass Zn + Cu	___ g	100° C	____° C	____° C	____° C	____Cal	____° C	__ Cal/g °C
6	Zn	___ g	100° C	____° C	____° C	____° C	____Cal	____° C	__ Cal/g °C
7	C	___ g	100° C	____° C	____° C	____° C	____Cal	____° C	__Cal/g °C
8		___ g	100° C	____° C	____° C	____° C	____Cal	____° C	__ Cal/g °C
9		___ g	100° C	____° C	____° C	____° C	____Cal	____° C	__ Cal/g °C

( H) Calories water absorbed    =     Mass of water 100g     x     T

H    =    Mass     x     T     x     Sp.H.

	H (Calories water absorbed )
Sp.H. ( for metal )        =	---------------------------------------------
	Mass of metal ( X ) Temp. change for metal

QUESTIONS:

1. What are the units for specific heat?

2. Define specific heat.

3. Which substance has the highest specific heat?

4. Which substance has the lowest specific heat ?

5. If one beaker with X grams at 90 °C was mixed with another beaker with 60 grams of water at 30 ° C and the final temperature was 54 ° C. How many grams of water were there in the warm beaker ?