Let's start with a naked periodic table. They say it sorta looks like a castle, with its 18 columns and 7 rows with 2 extra rows hanging below. The castle is made of 112 bricks, a.k.a. elements, which are simply not interchangeable. 75% of these elements are metals. The the columns on the left are the metals and the columns to the right are the gases. The middle, row 3 through 12 are the transitional metals.
There's a lot more to the elements than their placements. The negative particles in an atom are the electrons which are stored in different energy levels inside of the atom. Levels are nested inside each other and needs to fill itself with the electrons. Atoms first fill their inner, lower energy levels with their own electrons before they steal or share to make sure they have enough. "Atoms that don't have enough electrons in the outer level will fight, barter, beg, make and break alliances, or do whatever they must to get the right number." Electrons are the most important part of an atom. As we move horizontally to the right on the periodic table, each element has one more electron than its left neighbor. So as the elements keep growing they start storing the electrons into shells. Left elements with 2 electrons store in an s-shell, right side with 6 electrons store in a p-shell, 4th to 7th row with 10 electrons store in d-shells (and hide the rest of the electrons), and first row of floating rows, also known as the lanthanides or the rare earths, store their electrons in f-shells. The lanthanides store their electrons even more deeply and it is impossible to find a pure sample. Noble gases have enough electrons to satisfy themselves. Making them independent. Atoms also have positive particles called protons. The elements usually have the same number of electrons and protons which means they are electrically neutral. The atomic number plus the number of neutrons is the atomic weight. The number of positive protons, also known at the atomic number, makes the atomic identity, meaning elements cannot change their number of protons without becoming a whole different element. Partner: NateDate: 8/28/2014
Pre-Lab Questions 1. Why is it important to follow an agreed on procedure for a laboratory experiment? To prevent any accidents or any dangerous consequences. You don't want two different procedures because that might create something you may not had been anticipating. 2. Why is it important to document your procedure, errors you may have made, or differences in actual outcome vs. expected outcome? If something didn't turn out the way you were expecting it, you can always go back and see what step you made a mistake on. Or if someone wants to replicate your experiment, they will know exactly what to do just by reading your procedure. 3. Why do we normally not have food in Chemistry class? The food can absorb the air which may contain toxics which you'll end up eating. Or you may end up eating the materials itself. Experimentation Purpose To save Fred. Fred cannot drown nor fall off the boat. You need to get him in the boat with his life preserver. Procedure
We successfully located a life preserver on a worm and put him comfortably using only paper clips. Error Analysis Our error was not fully labeling our procedure. What we thought was obvious probably was not so obvious to others. So we had to make sure we really thought it out and explained our procedure well enough for it to be replicated. Post- Lab Questions 1. Was one of you more of a leader and the others followed, or did you share the responsibility for ideas equally? Why did it work that way? I feel like he tried to be the leader but I am naturally also a leader so we kinda realized that and were somehow able to work so well together. We definitely shared the experiment and our ideas were taken equally. 2. What areas of expertise can you bring to a project? (What are you good at?) I don't know if this is exactly a good thing, but I take leadership and bring all the stress upon me. It's just who I am and that's how I function in a group. 3. How do you feel about conducting laboratory experiments? Laboratory experiments seem quite challenging but I know when a teacher assigns one, chances are, someone has already conducted which makes it capable of doing. You know there is a solution so you feel a little bit more confident and not completely lost. But I am scared for when we create our own experiments. I don't know anything about chemistry so I feel like I will be lost. |
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