Heat of metals
To determine the
amount of energy metals absorb or their specific heats.
The ability of a
substance to absorb or release energy is known as specific heat.
If a substance
absorbs energy easily, it is said to have a low specific heat capacity.
have a low specific heat capacity Which means they will absorb energy easily.
- Hot plate
ml beaker with 500ml of water
cup with 150ml of water
- All students will
wear safety goggles once the heat is turned on.
- Do not place any
foreign objects on the hot plate.
the different metal cylinders and record in a data table.
the beaker with the water on a hot plate and turn on high.
the water is heating,take the temperature of the 150ml of water in the cup,
and record in a data table as initial temperature.
the aluminum foil and put a hole in it so that the thermometer fits through
the foil, and the foil will cover the styrofoam cup completely.
the water starts boiling, carefully place a metal cylinder into the water.
3 minutes for the metal to heat.
and carefully place the metal cylinder in the styrofoam cup.Quickly place
the aluminum foil over the top.
Carefully put the thermometer into the cup.
the temperature in the cup quits rising, record in the data table as final
the water in the cup so that the initial temperature is the same for each
with the other cylinders making sure that the amount of water in the beaker
stays about 500ml.
the last metal has been recorded, turn off the hot plate and allow the metals
up the safety glasses and return the metals to the teacher and clean up the
- Calculate the
heat absorbed by the metals using the following equation:
- Energy gained
by water= energy lost by the metal. (Mw
x Cw = Mm x(Tf-Ti)m
- M= mass of water
(volume and mass numbers are the same)
- C= specific heat
of water= 1 cal/gram
final temp. Ti= initial temp.
- Did each metal
absorb the same amount of energy?
- What do you think
might be the difference in the amount of energy each absorbed?
- Look at the metals
on the periodic chart. Is there a pattern? If so, what is it?
Calculate how much
the temperature rose in each metal.