![]() Purpose: The purpose of this lab is to learn more about earth science and where rocks come from. We wanted to see how rocks formed using these certain metals and how it involves the inner earth. Why is this topic important to understand? Research / Background info we need to know. Silicates: Combination of silicon(si) and oxygen(o) 95% on the earth's crust, and 97% of earth's mantle is made of silicates.
Na2sio3: sodium silicate Cacl2 + Na2sio3 ---- 2Nacl +Ca Si03 (Calcium chloride + Sodium Silicate)
Elements on the right side of the periodic table make the elements electromotive "is a measure of the tendency of an atom to attract a bonding pair of electrons."(www.chemguide.co.uk/atoms/.../electroneg.html) meaning the atoms will get electrons taken away from them. The further apart elements are away from each other the more reactive it is. Steps:
![]() Looking Back: chloride: When it was first put into the beaker it looked like white clumps. but when mixed it formed white stringy crystals. This happened pretty slowly. The sodium and chloride really want to react together, because sodium has one valence electron and chlorine has seven valence electrons and they want to make a shell of 8. The sodium and chlorine split and join together with each other and the silicate and calcium bond and we are left with sodium chloride and calcium silicate which causes it to form the white crystals. Cobalt Chloride: When this was put into the test tube it started out as a red circular objects, but as time progressed it went up towards the top of the beaker. It looked like blue/ Pink long strand. (kinda like coral) The sodium and the chloride mix together to form a shell of 8. The Cobalt bonds with the silicate and this turns the substances into a blue crystal like substance. Copper Sulfate: When this was put into the test tube they were little pieces of light blue, as time progressed it clumped together and some even floated to the top. The color remained blue the whole time. This reaction did not really change from its original form. The copper mixes with the silicate and the sodium mixes with the sulfate and this forms the light substance. Looking Beyond: I was curious to why all of the substances mixed the way they did and why the reaction turned out the way it did in a crystal like form. I think it would be really cool for a future experiment to make my own crystals and look at rocks under a microscope. Looking Inward: I liked how our experiment turned out, I think it looked really cool. I didn't contribute as much individually. I think that is the issue with doing group labs like this. No everybody participates as much as they should or would like. Looking Outward: We all worked as a class, I don't think I like doing these labs as much as I did before, because I feel like I don't get to be as involved as I would like. I also feel like I spend most my time trying to take all the notes I miss certain parts that can be important. Looking Forward: If I can do this again I would try to be more involved or do it individually, so I can take more away from this experience. Doing this as a group kinda takes away from having you own experience and it becomes the classes instead of just your own. In the future this can help me to try and take more from this lab scientifically and not just take notes, but actually know what i'm doing.
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