In Part 1 , I will compare cereals to find out how much iron is contained in a portion of 1 cup.
Mini Wheats: 90% of the daily value of needed iron based on a 2000 calorie diet.
Rice Krispies: 50% of the daily value of needed iron based on a 2000 calorie diet.
Hypothesis: My hypothesis is that there will be no visible iron in the Rice Krispies but there will be a bit of visible iron in the Mini Wheats.
I have taken 2 different cereals and compared there iron content in (mg). Then,I mixed and crushed the cereal with water and turned it into a mixture. We let it sit for 5 minutes and then turned a magnet in it for 2 minutes.
The Mini Wheats brought up a bigger amount of iron for the had a higher iron content to start with. The reason we added water to the cereal was to separate it and help us get the iron out.
The below photo is of a cue-tip with some of the iron we extracted from the cereal mixture. This iron is from the Mini Wheats which have a high iron content. You have to look close but you can see some black which is the iron.
The below photo is of some of the iron fillings sticking up from our magnet!
Looking at the photo below,you can see a big white mark. Ignore that white and focus on what is behind. You can see black blobs on a white background. Those blobs are some iron fillings that are on a microscope slide from my sister's microscope kit. I put the iron on there with a cue-tip.
On the final photo,seen below,you can see the cue-tip with very little (close to nothing) iron. This iron is from the Rice Krispies which have a lower amount of iron in them (only 50% percent of the daily value of needed iron for a 2000 calorie diet).
So why is there iron in cereal? Well,it is not naturally in cereal. We add it because iron is an extremely important ingredient for our body to function. Cereal is also one of the most common foods eaten so people have added iron to fufill peoples dietary needs. About 60-70% of the iron in our body is found in hemoglobin which is a protein in our blood that carries oxygen. Iron is also found in muscle tissue and certain enzymes.
In Part 2, I will compare different metals and conclude if they are magnetically attracted or not.
We already know of one magnetic metal. Iron! We saw this in the Part 1 when we magnetized it from our water cereal mixture.
The video below is of steel being magnetized. The steel was attracted to the magnet and stayed attracted. Steel is magnetic.
The below video is of aluminum metal. It was not magnetized by the magnet. Aluminum is not magnetic.
The video below is of a copper coin attempt to be magnetized. As you can see, the copper is not magnetized. Copper is not magnetic.
As we can conclude, certain metals are magnetic while others are not. Iron is magnetic, Steel is magnetic but neither Copper nor Aluminum are Magnetic.
Now that we have done both parts of the lab,lets figure out why iron or steel is attracted to magnets. I did some research and here are my findings. Iron is attracted to magnet because of its magnetic field. Before the iron enters the magnetic field,it's atoms polarization are random. But as soon as the magnet enters the magnetic field, the atoms start to face the magnet and align there electrons. This creates an attraction between the iron and the magnet. The iron will stay magnetic for a while after it is out of the magnetic field. Though the magnetism of the iron will wear off.
Just as we saw how magnets attract iron,lets see why other materials are NOT attracted to magnets. Aluminum is mostly not strongly attracted because of its atomic structure. It is attracted but at a very low and non-visible level. Copper is the same way, it is attracted but very lowly.
As I was doing my research I fell upon a very interesting subject. Materials can be classed in three different groups based on how they react to magnets. The three groups are ferromagnetic, paramagnetic and diamagnetic. Ferromagnetic materials are attracted by magnetic fields. Iron is a ferromagnetic material. Paramagnetic materials are attracted to magnets but at a very low level. They also do not stay magnetic after being removed from the magnetic field. Copper and aluminum are paramagnetic materials. The final group is diamagnetic which tend to repel magnets. Copper is also a diamagnetic material.
Citations: Bett, Suzanka. "Why Does a Magnet Only Attract Objects Made of Iron,Nickel and Cobalt ?" Quora, 9 July 2014, www.quora.com/Why-does-a-magnet-only-attract-objects-made-of-iron-nickel-and-cobalt.
"Magnetic Properties of Solids." Hyperphysics, hyperphysics.phy-astr.gsu.edu/hbase/Solids/magpr.html.
More, Anup. "Why Does a Magnet Attract Iron ?" Times of India, 22 Mar. 2009,timesofindia.indiatimes.com/home/sunday-times/Why-does-a-magnet-attract-iron/articleshow/4298171.cms. Accessed 12 Mar. 2017.
Wikipedia. "Magnets." Wikipedia, 28 Feb. 2017, en.wikipedia.org/wiki/Magnet.Accessed 12 Mar. 2017.
Boundless. "Diamagnetism and Paramagnetism." Boundless, www.boundless.com/chemistry/textbooks/boundless-chemistry-textbook/periodic-properties-8/electron-configuration-68/diamagnetism-and-paramagnetism-320-10520/.Accessed 16 Mar. 2017.