On Monday, our class went to the lab to understand the
grading system Mr. Abud uses. I learned his grading system, each questions is
graded out of four points. One point meaning you attempted, two points meaning
you understand the question, three points meaning you understand and explained,
but could use more explanation and four points means you understand
completely and explained fully. This grading system gives us more understanding
of how well we understand the things we learn.
On Tuesday, our class did a lab on the volumes of
irregularly shaped objects. To get the volume of each individual peanut
M&M, my group got the mass of peanut M&M first. Next we put each peanut
M&M in a cylinder filled with 40 ML of water. When a peanut M&M
was put in the cylinder the water rose. To get the volume of that peanut
M&M; we took the new water amount and subtracted the original
amount of the cylinder. An example of that is: a peanut M&M mass of 2.7 and
we placed in the cylinder the water rose to 42.5. So, to get the volume we do:
42.5-40=2.5 and the volume is 2.5.
On Wednesday, our class did a lab on the thickness
of aluminum foil. First, my group got the mass of
the aluminum foil, which was 2.72 grams. Then we got the density,
which was 2.7 cm2. From there we used the equation v=m/d and that was
2.72/2.7=1.01. With the volume we used the equation v=L x W x H and that was
1.01= 29.5 x 20 x h. The answer to that equation was h= 0.0017. The height
equaled the thickness of the aluminum foil.
On Thursday, our class did a lab on the volume of gas. We
got the mass of the flask with water and the tablet, the mass equaled 283.7. We
got the mass of the gas and then used the equation m/v=d to get the density.
0.6/283.7=0.0021, we then averaged the density with the other groups' density
and got 0.003/1 mL.
On Friday, our class went over all of the labs we did. We
found out that solids are 4x denser than a liquid, a liquid is 333.3x denser
than a gas, and a solid is 1000x denser than a gas. As for the densities I understand how the solid has the biggest, then the liquid has the second biggest and lastly the gas has the smallest density.We also went over how the numbers
of particles differ in densities. They could be more tightly packed or they
could be different sizes. We haven't yet come to a conclusion in class. I believe that both are true, because in the case of gas particles could be small and loosely packed. As for solids particles could be big and tightly packed. As for liquid the particles could be in between the particle sizes of gas and solids and their particles could be closer together than gas particles and further apart than solids. I can't wait to find out if I'm close to the explanation of particles.
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