Welcome!
Directions: Please go through the power point and
follow the directions. Complete the tables on your lab
paper and identify the Unknown metals.
This is a lab grade (30% of your grade)
NO PHONES OUT!!!
--- READ ALL DIRECTIONS BEFORE ASKING---
CHECK THE ADDITIONAL HELP SLIDES
Specific Heat Virtual Lab
1. Click on the metal "SILVER" in the top left of the screen.
2. Set the parameters to the following:
mass of metal = 120 g
temp of metal = 220 C
mass of water = 100 g
temp of water = 20 C
3. Record the specific heat of the metal and the water.
(both specific heats are under the temp box)
4. Click START.
5. Record the final temperature of the water and the metal.
(WAIT FOR THE LINE TO GO FLAT!!)
(Round to 1 decimal point)
6. REPEAT the experiment for the remaining five metals, two of
which are unknowns.
7. Fill in the tables and try to IDENTIFY the unknown metals.
alot of the information will be the same in the table… this is ok.
Check next slides for help
Ready to Identify? Click here to see the table
Additional Help
1st Table:
To find the final temperature of the Water/Metal, Click start and
watch the graph.. When the line goes flat and the temperature
doesn’t change a lot, write that down.. Round to 1 decimal point.
2nd Table: (a lot is copied from the 1
st
table)
To find the ΔTemp, Take the final temperature of the Water/Metal
and subtract the initial temperature of the metal. YES, IT WILL BE
NEGATIVE – the temperature went DOWN.
To find the Heat energy lost by metal, Use Q=mcΔt . (This will also
be negative, since the metal LOST heat)
Of Metal
Or lost
Of Metal
Additional Help
3rd Table: (a lot is copied from the 1
st
table)
To find the ΔTemp, Take the final temperature of the Water/Metal
and subtract the initial temperature of the water. This will be a
positive number.
To find the Heat energy gained by water, Use Q=mcΔt . (This will be
positive, since the water GAINED heat)
Or lost
4th
Of Water
Of WATER
Table:
Copy both numbers from the 2nd and 3rd tables, one should be
negative and one positive. They should be VERY CLOSE.
Additional Help
The heat lost by Metal X and Metal Y should be equal and opposite to
the heat gained by the water of both.
Solve for the specific heat of both of the unknown metals.
Heat lost by metal
Mass of Metal
(look at table 1)
Change in Temp
(look at table 2)
then use the table to identify which metals they are. CLICK HERE FOR TABLE
SPECIFIC HEAT IDENTIFICATION
Pick the Metal that is CLOSEST to your Value