Sunday, September 12, 2010

Physical and Chemical Properties of Marshmallows

     I chose to experiment with the chemical and physical properties of marshmallows because I decided it would be a fun, interesting, and safe experiment. I discovered five chemical properties and six physical properties of marshmallows. I tested four marshmallows for this experiment, and also included a fifth additional marshmallow that I left in it's original condition. First, I microwaved Marshmallow #1 for 30 seconds. The marshmallow expanded to roughly the size of a teacup and much of the marshmallow turned a brownish color. With Marshmallow #2, I placed it in a cup of hot water and after about three hours, it finally dissolved. Next, I put Marshmallow #3 in the freezer for two hours and it completely hardened. When I removed Marshmallow #3 from the freezer, i was able to use a hammer against it about five times before parts of the marshmallow began to crumble. Finally, I used a metal utensil to light Marshmallow #4 on fire. The marshmallow proceeded to turn black and the texture turned rough. The flame shut itself out, but not before the marshmallow had been burned. The chemical properties I observed include: 1) The ability to expand when heated (change in temperature); 2) The ability to change color when heated; 3) The ability to dissolve in hot water; 4) The ability to freeze; and 5) The ability to burn. The physical properties I observed include: 1) Color: white; 2) Density: marshmallow is less dense than water; 3) Conductivity: extremely poor; 4) Attraction to magnets: non-existent; 5) Malleability: slightly malleable when frozen; and 6) Hardness: very soft.

The following is an image containing the results of the experiment:


  1. Morgan-
    I think your idea of using a marshmallow was very interesting! Great idea! However, I don't think that the marshmallow completely dissolved in water, due to the picture, showing that solubility in water is not a property of a marshmallow. Also, the ability of a marshmallow to freeze is not a chemical property, it is a physical one, the freezing point. For your chemical experiments, you could have focused more on the four indicators, transfer of electricity, production of a new gas, change in color, and formation of a precipitate, to keep yourself in the right direction. Despite this, your experiment was well done and your picture was very helpful. Great job!

  2. Morgan, the idea of a marshmallow was very good. A couple of suggestions: When explaining the experiment you performed it may have been easier to follow if you stated the chemical property directly under the experiment with a picture. Another thing I noticed was that on number four, ability to freeze is a physical property because that is the freezing point. I thought you had great ideas, but you could have explained more. Overall, you were very creative with your ideas and experiments, and a marshmallow was a good object to experiment with. Good Job!!

  3. Morgan, your idea for using marshmallows is AWESOME!However, I think the experiment would have been easier to follow for the reader if the picture was directly below each explanation of the chemical property. In addition, I really liked your picture though,the way you labeled each one was creative.I also agree with Emily and Christina, the ability to freeze would be considered a physical property because it is a change in state. Overall, great job!

  4. The B2 product has become a very popular research chemical as it has many similar structural properties to Mephedrone. In recent years Mephedrone has become a Class B controlled substance. Due to the similar qualities of the compounds, B2 can be used as a replacement for mephedrone to allow legal scientific research to continue.

    Here B2 you can find more information.

  5. Areas that need to Buy Pyrazolam possibly be done throughout an specified time frame include course attendance along with related work, thesis run as well as a number of qualifying exams.