Intro to Energy (pgs 33-35)

Question
What is energy?

Agenda
Read current science and write summary on pg 33
Burning a peanut

1. Put on googles and leave them on until the end of the lab.
2. Double check that there is 100 mL of water in your 250mL beaker (with a graduated cylinder)
3. Place beaker on wire stand
4. Take initial temperature and record
5. Weigh your peanut and record the mass
6. Careully make a stand with a paperclip and place it inside the jar lid.
7. Place the peanut on the paperclip
8. Once it is stable, let the teacher know you are ready to light your peanut.
9. Once the peanut is lit, start your stopwatch and measure & record the temperature every 30 seconds.
10. When the peanut burns, let it cool and then weigh and record the mass again.
11. Pour the water into a graduated cylinder to measure the amount left.

   Record your information in a data table.  

   Analysis

Create a line graph of the temperature changes. Also, compare information with another table

Energy of a peanut	Your trial	Another groups trial
Mass of peanut (g)
Mass of remaining material (g)
Calculate mass burned (g)
Volume of liquid water (beginning)	100 mL	100 mL
Volume of water after heated

Qualitative observations

Describe how the peanut burned

How did the peanut look after it burned?

Compare the mass of the peanut before and after burning it.  Explain what happened.  Tell where the mass went.

Compare your trial results with that of other groups.  Discuss how are they similar and how are they different.  Give reasons for each.