Recently, I have completed the 6.1 and 6.2 notes. I have also finished a TPCASTT for English. I have learned how to calculate moles and also do Molecular conversions. Next, I plan on going to church, and taking a very long nap. I also plan to excel in this upcoming test on moles.
Saturday, January 23, 2016
Hydrate Composition & Formula
• A compound is composed of two or more different elements, that are chemically combined.
Ex. H20
• A mixture is made up of two or more different substances that are not chemically combined.
Ex. Salt Water
A hydrate is a compound because when the hydrate was heated, it produced a chemical change. The evidence that proves it was a chemical change is how the color went from a blue to almost a white color. The calculations of the percentage of water was the mass of the hydrate that was determined before an after it was heated. The difference was the amount of water that was added.
Calculations:
50.95-50.01=0.94
Mass of hydrate= 1-0.55= .45
(0.45/1)= 0.45×100= 45%
In compounds, the ratios are constant. But in a mixture they are different. I believe that the amount of water in a hydrate provides evidence that can be proved through similar percentages. But in our case, many of my classmates had completely different percentages. That being said it was hard to gather more evidence that a hydrate is a compound other than the fact that it changed color.
Ex. H20
• A mixture is made up of two or more different substances that are not chemically combined.
Ex. Salt Water
A hydrate is a compound because when the hydrate was heated, it produced a chemical change. The evidence that proves it was a chemical change is how the color went from a blue to almost a white color. The calculations of the percentage of water was the mass of the hydrate that was determined before an after it was heated. The difference was the amount of water that was added.
Calculations:
50.95-50.01=0.94
Mass of hydrate= 1-0.55= .45
(0.45/1)= 0.45×100= 45%
In compounds, the ratios are constant. But in a mixture they are different. I believe that the amount of water in a hydrate provides evidence that can be proved through similar percentages. But in our case, many of my classmates had completely different percentages. That being said it was hard to gather more evidence that a hydrate is a compound other than the fact that it changed color.
Monday, January 11, 2016
The Bean Lab- An Investigation of Moles
1) There are 26 beans in a "pot" of beans. This is correct because when averaging the beans in a pot for all 5 bean types, the answer is 26.
2) The relative mass was used to determine the number of beans in a pot because, the relative mass is a ratio. It's determined by dividing the mass of the 50 beans by the smallest mass of the 50 bean types, which in this case, were the lentils. So, that being said it's used to determine the amount of beans in a pot.
3) A "pot" is a model of a mole because its an amount, or number of any given substance. Just as dozen is used to describe the number 12, or gross is used as 144 and so forth.
4) The relative mass is used for the mole because its simpler to find the mole based off the other massed of the beans.
2) The relative mass was used to determine the number of beans in a pot because, the relative mass is a ratio. It's determined by dividing the mass of the 50 beans by the smallest mass of the 50 bean types, which in this case, were the lentils. So, that being said it's used to determine the amount of beans in a pot.
3) A "pot" is a model of a mole because its an amount, or number of any given substance. Just as dozen is used to describe the number 12, or gross is used as 144 and so forth.
4) The relative mass is used for the mole because its simpler to find the mole based off the other massed of the beans.
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