Purpose: We did this activity to study more about the earth and what makes up the earth. If we learn more about this we will have a greater understanding of how the Earth has changed in the past and how it may change in the future. Earth science helps us understand the periodic table of elements and about different sources of energy; gas, oil, coal, etc. Which are all very significant to powering our society. ____________________________________________________________________________________________________ PROMPT 2: WHAT INFORMATION/CONCEPTS DID YOU HAVE TO KNOW IN ORDER TO INTERPRET WHAT WAS HAPPENING? Research: Silicates: Combination of Silicon (s;) and oxygen (o). 95% of Earths crust, and 97% of earth's mantile is made of silicates. Layers of the Earth: 97% is silicon and oxygen
Na2 Si03 : Sodium Silicate Calcium Silicate Ca Cl2 + Na2 SiO3 --------> NaCl + CaSiO3 Calcium Chloride Sodium Chloride
Materials:
Directions:
PROMPT 3: TELL YOUR STORY, WHAT HAPPENED? What Happened - A Crystal-Rock Story So after the beforehand briefing that Andrew did, we then got into starting to mix the solutions. We first started with Calcium Chloride. He brought over white balls, and slowly dropped it into the small vials. It wasn't until a few minutes when the balls began to sprout into small little branches. This reaction took the longest. After that, we moved onto the next vial. Andrew got out a red substance called cobalt chloride in which they were very small red balls. He dropped them into the second vial, we watched as they immediately reacted and began to sprout up red long lines that went towards the top of the vial. After that, we moved onto the next vial. Andrew got out a light blue substance called copper sulfate. It stood still at the bottom of the vial, nothing happened except for small portions of it floating upwards to the air. When we finished all the reactions, I later realized that the second vial containing cobalt chloride was now turning into a purple/blue. I also noticed that the last vial, the copper sulfate had an usual quality of being able to keep the liquid inside the vial, however way you turn it. ____________________________________________________________________________________________________ PROMPT 4: EXPLAIN YOUR OBSERVATION, ASK QUESTIONS What I learned? Noticed? Calcium Chloride - With the calcium chloride we noticed that after awhile, there was branch like crystals forming from the white balls. It grew from the bottom of the vial, creating almost a "forest" of white strings going up the sides. It took the longest time for this reaction to happen, longer than the other two vials. Cobalt Chloride - We first had red beads dropped into the second vile. Immediately, parts of the red beads were shooting up into the top of the vial, they slowly left a trail of red as long strands climbed up the side of the vials. After awhile you notice that the color of these various strands turns from a bright red magenta, to now a purple/blue color. This reaction happened on the spot, immediately when we dropped it in, it started to sprout. It was later when the drastic color change started to happen. Copper Sulfate - According to Andrew, this mixture didn't work with the solution. He put in small beads of light blue and we watched as half of it stayed on the bottom and the other half rose to the top of it. What I did notice was that afterwards, the vial could be turned upside-down and miraculously no liquid would seep out. It was as if the crystal sealed the exit of the water. Nothing really happened besides them floating to the top. When I revisited these vials the next day Here are the three different "Crystal" reaction vials.
Here is what I noticed once I compared:
I also noticed that the next day, the first two vials were cloudy in white while the copper sulfate stayed a clear liquid/ Questions I have:
PROMPT 1: WHY STUDY EARTH SCIENCE/ROCK FORMATIONS? We did this activity to study more about the earth and what makes up the earth. If we learn more about this we will have a greater understanding of how the Earth has changed in the past and how it may change in the future. Earth science helps us understand the periodic table of elements and about different sources of energy; gas, oil, coal, etc. Which are all very significant to powering our society. (From the purpose area up above as well) Everyday we are trying to discover new things, whether it be a cure to a disease, or to discover the new part of under the ocean. Earth Science is helping us have a better understanding of our earth that we are endlessly trying to discover more about. Rock formations are important for us to see the past of our earth. Places like the Grand Canyon are examples of earth's history, nature making these beautiful scenic formations due to erosion and weather. Learning more about these formations and earth in general brings us closer to understanding what happened on our earth before.
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