Tuesday, December 7, 2010

The kinetic theory of matter      

Results        

When the two glasses of water were completely still, I added one drop of blue food coloring to each glass. One of the glasses had cold water in it while the other had hot water. The food coloring spread very quickly in the hot water. It took about 7 minuets for the whole glass to turn blue. The top of the glass was much faster. It only took a minute to turn blue. With the cold glass, it was a full 20 minutes for it to turn blue. When the coloring was added, it went straight to the bottom of the glass and worked its way up the sides.

Conclusion

       When the coloring was added to the hot glass, it went from the top down, going down the sides and up the middle of the glass. This is the opposite of what the cold glass did. The cold glass went up the sides and down the middle. The reason for this was that the cold glass was colder than the air. So the air warmed up the sides so they were warmer then the center was. So in the cold glass the water went down the center and up the sides where it was warmest. In the hot glass it was switched around. the colder water was on the sides while the warmer water was in the center so the water went up the center and down the sides. The end reason for the coloring to spread through the water is that the molecules are always moving and when the molecules are warmer they move faster. So that is why the glass with warm water spread the food coloring faster.


when coloring was first add to cold glass
















 The warm glass of water when the coloring was added