Monday, May 27, 2013
Week 32: TEACHER OF THE YEAR!
Heres a link to the Grosse Pointe Patch Article about Mr. Abud's honor :http://grossepointe.patch.com/articles/grosse-pointe-north-educator-named-michigan-teacher-of-the-year-4d95c7fb
But dont read the comments, parents in GP can get Dirty and snippy. but i digress. This is a chemistry blog and were discussing the sucess of our AWESOME TEACHER! I really think he's deserving of the honor.
Besides the festivities on thursday we started to get into Thermodynamics, but since we were simply left with worksheets after the initial lesson, the sucess of my understanding of Thermodynamics was nonexistant, unfortunately. T understand the principles of potential and internal energy verses total enery and how one afftects the other and so forth but the other problems on the sheet left me confused. oh well, i can simply ask the michigan teacher of the year!
Sunday, May 19, 2013
Week31: Back on Track!
We discussed the synthization of copper this week and even preformed it. I sadly wasn't there everyday ( thanks to AP Exams....) so i don't think i truly understood the experiment.
We started with an Iron Nail sumperged in copper chloride after weighing out the copper cloride and adding water. Imediately the nail took on a Red color, assuming the nai lwas oxidizing, or rusting, we set it in the corner of the room and left it overnight. i thought it was cool how immediate the change was. When we returned the next day, the nail was covered in a red... algae like substance, and i was worried something was wrong becuase the water was a urine yellow color. we removed the liquid from the test tube and them removed the nail. the Algae stuff decreased in size when removed from the liquid, and took on an even briger reddish hue. IT didn't look like rust anymore. we removed all we could from the liquid and from the test ube and offf the nail and Mr. Abud expalined this was what pure copper looked like.
IF the copper was not a solid, what was the liquid now? We noticed th thee mass of the nail shrunk too, and we concluded the liquid was iron chloride, and not copper chloride. this Synthesis of copper is a warm up to the snythesis of silver, which we'll do and make silver coke bottles next week i am truly excited for this!!
Week 30: I was studying for Exams.
Now were getting into using BCA Tables to predict how much product we cna create with the reactants we have primarily worked in moles, how many moles of X and y produces how amny moles of z, but were branching into more... realistic adaptions going from grams, converting to moles, and them back to rams to get the final answer.
We did a few problems on this type of eqations.
I had some trouble with this on my assesment on friday, as i get stuck when i comes to the converstions and usually end up with weird answers that differ from everone elses, it's probably because i don't round right or something,
Another issue i have trouble with, Maddie, is identifying the limiting and excess factors in the equation, i mean i get what they do, but to instantly see which is which is harder for me. I think i need to practice these equations more to fully master them.
I know the picture is kinda sad but i came from my phone, to find the limiting reactant i usually have to draw out the equation with dots, it's silly but it works for me. do you have any input on how ot help with this? Thanks Maddie.
Week 29: I'm terribly sorry this is Late.
Though this week, the cookie Lab was due on Monday and i took on the responsibility of baking, i had gotten back from Canada that mornign so i was a BIT flustered! I followed recipie "F" which oddly called for three table spoons of Vanilla, while i thought of this a strange, nothing else seemed to out of preportions so i simply kept bakign as usual. Getting the baking cocoa into the batter was a bit difficult and my dad was adamant about me "blending" the cookies ( i did it to appease him, dont EVER try it, it was messy and about 90% of the batter stuck to the mixers, which guess which lucky gal got to scrape it off? This one.) eventually we made about 40 cookies or so, out of the supposed 54 it was intened to yield, i thought nothing of it till the next day.
When we all " sampled" one another's recipes, we could tell when something was... off about some of the cookies, most often in size or color, but in one case a batch of cookies was WAYYY too salty. In the end, we picked the "true" recipe and discussed how excess and limiting factors effect a recipe, and chemicla equations are the "recipes" of chemistry, i feel it was a good way to ease into the lesson.
Later in the week, we worked more on chemical equations, usuing worksheets and learnign about different "types" of equations, i find them all so interesting, i really like stoichiometry as a whole, i wonder if you can spend your life doing it? maybe but Mr. Abud says you're graded in college by your precent yield of experiments and that, that scares me!
Well i've looked through my phone but i mustive done soemthign bwith the pictures of the cookies i made, so i don't leave this blog blank, here's the "actual" recipe that we vall recieved deviated versions for the cookie lab instead!
http://www.verybestbaking.com/recipes/18476/Original-NESTL%C3%89-TOLL-HOUSE-Chocolate-Chip-Cookies/detail.aspx
Saturday, April 27, 2013
Week 28: Balancing Equations and Burning Butane!
Happy Saturday! I hope you're enjoying your weekend!
I feel this week we really comprehended different types of chemical equations as well as how to balance them.The three worksheets we got last week were quite helpful in undetstanding chemical equations as a whole.
A Single repalcement is when a ionic compound is broken up by a cation or an anion to form another ionic compound with a different byproduct. A double replacement is where two ionic compounds come togethr and basically flip flop so that the cations are paired with new anions, and there is no byproduct in this type of chemicla equation.
Another part of chemical equations are synthesis and decompsition. Synthesis is where two ( or possibly more) Ions are put together to for an ionic compound. An Ionic compoung that returns to it's individual ions is called a decomposition,while thse processes are two sides of the same coin, they are both very different and easy to mix up, i almost putsynthesis when it was actually decomposition on the assesment on friday, Margo noticed the slip up and saved me!
Combustion is my favorite chemical reaction! This is when the product of the reaction is Water and Carbon dioxide, and that's all! I think that it's so cool that there is a seperate category for this reacttion.
Finally Balancing the equations is always about having the same ammount of molecules that you started with on the left side to end up on the right side, so i usually draw a diagram with little dots, some colored in and osme left blank, to sort out how many of each molecule i need, and to correctly balanace the equation, during our group assesment, the liuttle tiny dots were how we showed " particle diagrams for each reaction!
The best part of ChemTeam this week was lighting the t-shirt strip doused in Butane and becuase of the string, we could "hold the fireball" The fact that it was burning the butane and NOT our fingers was the coolest thing to me! Look at the picture i took, it looks like Mr. Abud can shoot fire from his hands! ( don't make him mad, jk!)
Sunday, April 21, 2013
W33k 27: Chemical Reactions, Colecting Hydrogen Gas, and why air bags deploy so quickly!
Now that i know Madison is going to start reading this i will adress it to her!
Hi, Madison! Happy sunday! All the chemical reactions we experimented with this week were quite facinating! Now that we all have a basic grasp on the elemts and ionic bonding, we now an delve into chemical reactions, another important ( and inevitable, things DO blow up!) part of Chemisty.
When we all mixed Clacium with Hydrochloric acid ( as only half of the groups had finished on friday) wek saw gas comming from the bottle, as gas is a common byproduct of a chemical reaction. After testing the gas's combustability, we determined taht the gas was hydrogen and the chloride and calcium bonded to one another forming calcium chloride. The calcium and hydrogen didn't form anythign together because they are both positive elements, and because Hydrogen is diatomic and it can bond with itself, the equation balanced itself in the end.
What was happening was the pull between the clacium and the chloride was stronger tha th e pull between the hydrogen and the chloride, so the chloride bonded ( ionically) with the calcium and the hydrogen to bond with itself asnd become pure hydrogen gas. After becoming both calcium chloride and hydrogen, the byproducts of this chemical reaction were not as harmful as the orginal hydrochloric acid ( whic is a positive Hydrogen bonded with a negative Chloride) whic can bnurn though skin.
Later in the week we began to draw out what happens in a chemical reaction, with the help of worksheets and skill practives. there are several types of rections, single reactionsthat only one element replaces one part of the ionic bond and a double replacement reaction where two ionic bonds swap which element they are bonded two, in the simpliest sense. Combustion reaction ALWAYS produces Water and carbon dioxide, becuase a hydrocarbon reacts with aon oxygen. Synthesis and decomposion reactions are oposites of one aother. Sysnthesis is where two elements form to create a ionic bond. Decomposition is where an ionic bond is broken up into it's elements.
Another important part fo writing Chemistry formulas is balancing the equation which makes sure that the number of atoms doesnt vary from one side of the equation to the other. I had some diffuculty with this nadi asked Harris but ifeel he was quite confused with it himself. Maybe you understand it, Madison, and you can teach me how to do it correcctly.
Lasttly because we are talking about reactions and such, and because i was geeking out about this, i thoughti should share how airbags deploy so quicky. It's actually thanks to a chemical reaction. Inside the airbag chamber ther is noth Nitrogen gas and a gas called Sodium Azide, which is one Sodium Atom and three Nitorgen atoms. Because this is an unstable compound, and Nitrogen is diatomic the littlest ammount of pressure ( say a person flying into the steering wheel, not little but there would be pressure on the air bag then) causes the Nirtogen to bond with itself, causing the airbag to inflate rapidly with nitrogen gas, along with Sodium nitiride ( Na3N). I saw this on a TV show where a guy got blown into the air by sitting on an airbag, and scientists expalined how it was possible and such. I thought it waso ne of the coolest things i have seen on TV in a while!!!
Here is the video of the man sitting on the airbag that Scientists were trying to explain the science behind :http://www.youtube.com/watchv=uUZJkti1A3MSunday, April 14, 2013
Week 26 : noman clature for naming substances
In the past week we have finally started discussing how to.name substances besides ionic bonds, we actually introduced a new type of ionic bond called the Polyatomic ionic bond where more than two elements bond together to make a compound that can with mix with other elements to become neutral substances . We also learned that to make an acid you must add a positive hydrogen bond to certain ionic and polyionic bonds to make acid.
Other than the rules above, the process is the same as we learned when we were dealing with simple ionic bonds, including the transition metals and their different levels of positivity ( they are always positive because they conduct electricity ) making the work this week very do able I hope we can further our knowledge upon this topic, as I feel I.have finally begun to make my own breakthough of sorts on this topic


