States of Matter Lab!

These are examples of the candles we used!

During the past week we have been doing an abundant amount of labs. We successfully did these labs, Marshmallow lab, Candle lab,  Observing Changes in Matter Lab, and finally the Pouring Gas lab. In this essay I will explain to you what all these labs are. First we will talk about the Candle lab. During this lab, we lighted a birthday candle and observed the changes. But, before we lit the candle, we used some of our senses to observe the physical property of the candle. I first noticed that the candle was very tall, thin, rough, and that it was made out of wax. Mrs. Rousseau lit the candle for us so that we did not start off and fires, then we quickly saw many chemical changes. The candle showed heat, light, and burning wick is turning black. After a little amount of time we discovered two physical changes that the candle was melting and shrinking slowly and slower.

These are examples of some the marshmallows we used!

The next lab we did was the awesome Marshmallow Lab. We did this lab on two different marshmallows, one huge one, one small one. We tore the small marshmallow into two pieces, which was a physical change. Then we ate the small marshmallow and we jotted down how it tasted. I thought it taste scrumptious and sweet in my mouth. The next step that we did was using the Bunsen Burner and that large marshmallow. First, we put the marshmallow over the Bunsen Burner to see what the outcome was. The marshmallow had changed from a sweet and scrumptious white marshmallow to a dark and black hot disgusting marshmallow! This was a physical change because it melted the inside of the marshmallow but was also a chemical change because it was burned by the fire. After the burning, the marshmallow went from a solid to a liquid and solid mixture. Out of this lab I learned that when we burn the marshmallow that it was a chemical change!

This is an example of the candles that we used!

Another lab that we did was the Pouring a Gas Lab. First we lit the candle to start the lab. After this my group mixed the water and the vinegar into the same glass. Then we carefully added some more of the baking soda into the glass. The reaction was quick that I could barely even see it. The liquid exploded and created a white foam to go up quickly and drop all over the edge of the glass. Then we all decided that this was a chemical change. Once the foam came back we slanted the glass over, but we had to do this without making the liquid fall, and then we held it beneath the flame. The flame immediately went out as soon as we did that. Out of this lab I learned that when mixing water and vinegar into the same glass and then add some baking soda it would create white foam.

This is a chart!

The last and final lab we performed was the Observing Changes in Matter Lab. In this lab, we implemented many diverse experiments to sugar cubes. We took a sugar cube and used our senses to examine it. We concluded it was small, white cube-shaped ,sweet. We took two of the cubes and decimated them. This was a physical change because the final outcome was still sugar. Then we took the crushed powder and dissolved it in water performing another physical change. The sugar was still their because we could still taste the sugar. If we could not taste the sugar, we would have noticed that the water had become less pure as it was before we dissolved the sugar in it. Next, we took the last two sugar cubes and put them into a test tube. We used a tong (are used for gripping and lifting tools, or which there are many forms adapted to their specific use) and put them over the Bunsen Burner. My group first saw a yellow liquid sprouting underneath the sugar that was precipitously turning brown. Soon the liquid changed into the color black and we couldn't see the sugar cubes anymore. We concluded that this was a physical change. After a few minutes we took a look at it again. It was bigger than it was before and it was black and burnt.


Links: http://www.clickandlearn.org/images/water_cycle.gif, http://www.imemc.org/attachments/dec2011/candle_detainees.jpg, http://journals.concrete.org.au/inourtimes/archives/marshmallows.jpg, http://www.evercoctail.com/images/2,011/12/birthday-candles.jpg