Lab Blog

In class we did two labs about physical and chemical change. The two labs were lighting a candle and stating if it was chemical change or physical change. The other lab was cooking a marsh mellow and stating if either it is a chemical change or a physical change. Skills that I learned in these labs is, cooking a marsh mellow. Another skill I learned during this lab is gases are very quick and can disappear very fast so you need to be quick with gases.
 From these labs I have done I have learned so many cool and amazing facts. Information I have learned from the candle lab is the gases from the vinegar and baking soda can cut a fire circuit. The gas that went on the fire to put it out was co2 carbon dioxide. The flame goes out because fire needs oxygen to live. Putting the co2 carbon dioxide on the fire it would kill the fire. In this lab I observed some changes. The changes I observed is chemical change and physical change. The chemical change in the candle on fire was the wick of the candle. The wick first was white and was straightened. A couple of seconds after the fire burnt the wick the wick was no longer white(it was black) and it was bent into a shape of a candy cane.
From the marsh mellow lab I also learned so many new things. In a plate we had a small marsh mellow and a large marsh mellow. For the small we had to rip it in half which was a physical change. Then we used the big marsh mellows and hovered it over the Bunsen burners. When I put the marsh mellow over the Bunsen burner the outside of the marsh mellow burnt, which was a chemical change.