The first photo shows our group mixing the two original solutions and the second photo shows a couple solid products of the reactions.
Driving Force Lab
The other day, we performed a lab where we took two aqueous molecules and put them together to see if they would create a solid. The purpose of the lab was to demonstrate how two soluble molecules can create a solid molecule and how the driving forces can affect this process. It was very interesting to see how some of the reactions would cause an instantaneous reaction that would create a completely different color from the original solution.
Chemical Reactions
We are starting the new unit: Chemical Reactions. I see this unit is going to be a bit tougher than the previous sections we have covered. We are starting off with balancing equations and looking at the driving forces in reactions. This isn't too bad, but I wish I didn't fall asleep for this lesson. I found a great simulation for balancing chemical equations. Check it out here. Also check out the link under the photo for more information.
Chemical Composition Test
We took a test over chemical composition. I'm not going to say it went very well. Some of the questions weren't very hard, but I had to guess on at least five problems because I ran out of time to test. I feel like I didn't do too bad on the rest of the test, so I'm not too worried. Most of the problems were very gross. They didn't contain too much math. I skipped most of the long problems because I didn't have time to simply do them.
Since we're on chemical composition, I'd thought I'd attach a link here about the cosmos since they are so interesting and mysterious. This link will show you the chemical makeup of the entire universe. If you're feeling adventurous, there is much more information on that website just waiting to be read!
Since we're on chemical composition, I'd thought I'd attach a link here about the cosmos since they are so interesting and mysterious. This link will show you the chemical makeup of the entire universe. If you're feeling adventurous, there is much more information on that website just waiting to be read!
Chemical Formuals
We are learning a process on how to derive the amount of atoms in a chemical formula from the mass of a compound. It's started by finding the individual mass of each element in the compound then the total mass of the compound. After finding the percent of the elements, change them to grams and then convert them to moles. Finally, divided each mole by the smallest mole to get the number of atoms. It isn't a very hard concept. This link here will give explanations to properties certain elements have in chemical equations.
A lab was performed in class to find the amount of Zinc and Chlorine after a chemical reaction. After finding the mass of the compound, the process for finding atoms was used to balance to equation for the compound. If I remember, the compound ended up being ZnCl2. Howeverr, the compound cooking on the hotplate did not smell very good!
A lab was performed in class to find the amount of Zinc and Chlorine after a chemical reaction. After finding the mass of the compound, the process for finding atoms was used to balance to equation for the compound. If I remember, the compound ended up being ZnCl2. Howeverr, the compound cooking on the hotplate did not smell very good!
Chemical Composition Test
Yesterday we had a test over chemical composition. It was mainly a math based test. The different kinds of problems that were covered included converting from mass to atoms, atoms to moles, and finding the amount of water in a compound. It wasn't a very hard test even though I might just be doing the problems completely wrong and I just don't know. At least I think I know how to do it. This might have been a quiz and we still have more of this unit to learn.
Since I'm on the subject of compounds, I thought I'd add a cool link about some toxic compounds here. I'm sure we won't be using any of these chemicals in lab, but make sure to steer clear of them. I won't be very seeing if Bactrachotoxin is actually deadly (which it is)!!!
Since I'm on the subject of compounds, I thought I'd add a cool link about some toxic compounds here. I'm sure we won't be using any of these chemicals in lab, but make sure to steer clear of them. I won't be very seeing if Bactrachotoxin is actually deadly (which it is)!!!
https://en.wikipedia.org/wiki/Batrachotoxin
I thought the part of this unit that talked about hydrated particles very interesting.
Check out the link under the photo for an excellent example of water and energy exchange in compounds.
The Mole
The mole is unit that is commonly used to express the amount of a substance. It is a combination of a regular mass in grams and the atomic mass. It can be expressed by the Avogadro constant which is about 6.02 x 1023 .
Check out the link under the photo. It has an awesome video explaining the mole. A mole also acts as a converting factor. It can be used to express the mass of a finite number of atoms or vice versa.
Check out the link under the second photo also. It gives a good explanation on mole math and the different kinds of situations the mole can be used in.
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