User talk:Sonnyt33

Chemistry							Sonny Tavanh Block 2 & 6 ACD						9/8/08

Foil & Blue Salt lab

1.What are 2 quantitative observations from this lab? 2 quantitative observations are the time and the temperature.

2.What are 2 qualitative observations from this lab? 2 qualitative observations are the aluminum foil started to break apart and the aluminum foil changed color.

3.What are all the physical changes you observed in the lab? Physical changes I observed are that the aluminum foil had an odor and it changed color.

4.What are all the chemical changes you observed in the lab? The chemical changes I observed are change in energy, bubbles, odor, and color of water.

5.Did chemical reaction take place? Use one example from this lab to support your conclusion. Yes, the temperature increased.

6.What is the independent variable? The dependent variable? The independent variable is the aluminum foil and dependent is temperature of blue salt water.

7.What does your graph show happens to the temperature when the time increases? My Graph shows that the temp. increases then decreases.

8.What do you think happened to the foil? I think the foil rusted after it was added to the blue salt water.

9. Some reddish-brown material is usually formed in this lab. What do you think this material is? I think the material is rusting aluminum.