Mineral Lab Report

Lab Report
This lab was to see does the weight of a mineral affect the density of it
My class and I had to pair up or be in groups, I was in the group with Miona and Sofia. Procedure was First to get all of the materials which were a balance scale, 3 different types of rocks, a graduate cylinder filled with water up to 150 milliliters. That is the volume of the mineral. After that we divided the mass by the volume to get the density. And then we do the same thing for every other big and small mineral.

Materials:
Balance scale
Graduate cylinder (filled with water)
3 different types of minerals
Procedure:
Measure each mineral and record its weight
Dip the mineral in the graduate cylinder which is filled with water up to 150 mm
Record for how much did the mineral rose up the water in the graduate cylinder
Observe does the weight affect the density of a mineral
Divide the centimeters of the rose water
Procedure:
First we need to measure the weight of the mineral on a balance scale to figure out the mass of the mineral. afterward we need to fill a graduated cylinder with water up to 150ml. subsequently we put the mineral in side and see up to where the water rises, that is the volume of the mineral. following that we divided the mass by the volume to get the density. And then we do the same thing for every other big and small mineral.



Hypothesis:
Q: Does the weight of a mineral its density
A: Yes, if the mineral is heavy the more is the density with it.
Controlled, Manipulated, Responding Variable
While testing and observing the minerals we have learned that there are controlled, manipulated, and responding variables’, the controlled variable is the one that could be controlled in other words means that the substance did not change and was controlled, manipulated variable is the variable which could be changed in other words the substance can or could be changed, and the responding variable is when it is changed the change can make another substance so it can respond. In this case we observed 3 minerals which were pyrite, sulfur, and azurite.
• Controlled (the same): water
• Manipulated (change): samples (Sulfur, Pyrite and Azurite)
• Responding: Density

Procedure:

First we had to weight the mineral and see what was its weight, afterwards we have put the mineral in the graduate cylinder which was filled with water up to 150 milliliters, when we would drop the mineral in the graduate cylinder we would see for how much did the water raise up.

The data table
Mineral Size Mass Volume Density
Sulfur big 28 180 1.55
Sulfur small 14.3 160 0.09
pyrite Big 41.5 165 0.25
pyrite Small 29.7 160 0.18
Azurite Big 60.6 170 0.36
Azurite Small 0.71 150 0.0047



Graph

Data Analysis
As I can see from my graph, that the weight does effect the density of a rock. In my graph it indicates that the lighter the mineral the less it roses up water, I also notice that sulfur lifted the water surface, and with the purpose of pyrite and azurite are pretty much the same. In weight the heaviest of most was azurite which was 41.5, the second was sulfur which was 31.3, and the lightest was pyrite which was 16.6. From this lab I have learned that just how much mass does the mineral have it means that its density will be as its mass.Sulfurs density was 2.07 g/cm3 density was (Electron Density)=4.84 gm/cc note. and Azurite density was Average = 3.83

Further inquiry
While doing this lab we had made some errors, like: we had a hard time getting all of our materials, and getting along in the group, and measuring the minerals correctly. If I was to do this lab again I would improve in these three areas along with my group. We have afterwards excelled in cooperation in our group, which we collected information together and did our jobs in the group.
Conclusion:
From this lab I can conclude that if a mineral has a large weight (much mass) its density will be also high. From this lab I have learned a lot of things but this one was the main one. I also learned how to measure the density of a mineral, which is you need to have a graduate cylinder filled up with water up to 150 ml and drop the mineral inside of the graduate cylinder and see for how much did the water surface raise. up the more it rose up that’s the more it has mass inside it. So I think I have learned from this lab a great deal.
Luka Ilic 6b
3/18/2011

Reflection on Rocks and Minerals

In the new unit on rocks and minerals I have learned a lot of interesting things which I didn't know before. For example I did not that all the rocks on this planet have been formed in three ways and could be divided in to just three groups: sedimentary rocks, igneous rocks, and metamorphic rocks.I also learned that the rocks are formed through rock cycle which consists of three phases, which are: melting,crystallization, sedimentation. Unlike rocks all minerals have a crystal structure and definite chemical composition. This was also a new information for me. The most fascinating information I have learned is that all crystals grow which we actually have learned before when we did our growing crystals project but then I didn't understand that the same process occurs in nature and in the whole universe. We have also learned that rocks can not be minerals But they are made of minerals.The most precious minerals is an diamond which is one of the rarest and the hardest substances on earth. There are many different minerals and stones on this planet but some of the most interesting are: marble,granite, and limestone and amethyst, quartz, and diamond. Marble is a beautiful, relatively soft whitish yellowish rock which is used for sculpting, building, and house furnishing. The most famous sculptures have been done in marble. Granite, on the other hand, is a very hard rock and it is used for building, and making any hard surfaces. Limestone is the most common rock on the surface on the earth although it is relatively soft it can be also used for building. It porous and may contain a lot of water. Amethyst is a purple mineral which belongs to a group of semi-precious gems. Quartz is the most common mineral on our planet, and it is has been used in many different branches of industry. Diamond, as I have said before,a diamond is a mineral which is one of the hardest, the rarest, and the most precious substances on Earth.

Reflection on Volcano Project

Reflection
I think that I had done a great job, but I always need to improve. In this case I need to improve on my power-point presentation and in writing the presentation. My oral presentation was excellent from my point of view, I have spoke clearly, I have not stood in one spot I have walked (made a few steps) and I have made eye contact with the audience. My presentation missed some images I had only one image of Mount Saint Helen volcano ( which was my volcano topic). So if I had a chance to do this project again I would add more images or visuals and I would change my sentence structure on the power-point and I missed a bibliography, so these are the things I would add to my power-point presentation. In the other case of which grade should I get, I would give myself a 5/6, Because all of these reasons I have said, and why should not I get a 6/6 is because I have not added the bibliography and not many images. I have learned that there are many types of volcanoes stratovolcano, cinder cone, and shield volcano. I have learned much about volcanoes, like that there is a ring of fire and about how does a volcano work. Volcanoes can affect people around it in a positive way and negative way. The negative way is that eruptions can affect people, on the other hand it affects by giving fertile soil. Volcanoes affect the world same as it affects the people near it but maybe in a less strong and severe way.