Transfer of electrons: Redox

Last week we learned about redox reactions which is when electrons are transferred from the metal to the non-metal. If a species loses electrons it is said to be oxidized. If a species gains electrons it is said to be reduced. We learned that in redox single replacements the metals have changed places, metals attack metals, and reaction is based on reactivity series. Here is a link to help with redox reactions.We also learned about: synthesis, decomposition, and combustion
Synthesis is when two or more reactants combine to form one product
Decomposition is when one reactant produces two or more products
Combustion is when a hydrocarbon reacts with oxygen and the products are always CO2 and H20

Night before the quiz

I feel like I really understand this chapter and have been studying a lot so I feel like I  will do really well on this quiz. For this quiz I went back over my notes, went over the lab we did, watched videos, learned the solubility rules, and did practice problems. I think the thing that is worrying me tomorrow is that the quiz is only 20 minutes and I usually don't do a well on timed tests.
 Here are some of the videos I used to help me study:
Link 1 
Link 2

Lab!!!!

During this lab we got to use the solubility rules to predict the precipitate of different substances. For example when my partner and I mixed KI and AgNO3 we got to predict the outcome and then see if it really happened which it did and the ending product was AgI (s). I believe this lab really helped me understand the lesson we are doing now and gave me a lot of practice figuring out molecular and net ionic equations.

Set up of the lab:

 

Safety first! (Must wear goggles in this lab):

R.I.P. to my chem grade

Today we took the unit test for chem and I didn't even finish the test. I had a bunch of answers I just had to fill in because time ran out. The problem is that I studied so hard for this test and probably still failed. I studied with friends, did the practice problems online, watched videos, looked over the recent quiz, and studied the polyatomics. Even after doing this I got to the quiz and didn't know how to do a bunch of the problems.
Here were some of the links that I used:
link 1
link 2
link 3
link 4

FINALLY GOT IN A LAB!

This week we did the formula of a chlorine lab. But before that we had to pass a pre lab quiz. For the quiz we had 3 minutes to determine the formula of a compound given the following information: the mass of the beaker, the mas of the beaker + the hydrate, and the mass of the beaker+ the contents after heating. I actually passed this quiz so I got to get into the lab in the lab we had to determine the formula of the compound zinc chloride by measuring masses involved in the reaction of zinc with hydrochloric acid. It was fun actually being able to do a lab!

After pre lab quiz and night before quiz

Again only one group ended up passing the pre-lab quiz. I studied for it but I got really nervous when taking it because it was timed and I ended up getting the problem wrong. Tomorrow is the quiz and I am pretty nervous for it. I feel like I understand it in class but then when I get to the test it totally leaves my mind. So far I have reviewed my notes and gone over the chart we have to memorize a couple of times. I will also review polyatomics and try to watch some videos that might help me.
Here are videos that might help:
Video 1
Video 2

night before pre lab

I am very nervous for this pre lab. Last pre lab quiz only one group got to do the actual lab. For this quiz I went over the lab, looked at my notes, and also did practice problems. Although I did all of this is still do not feel that confident.

Mole

Today we learned about mole and how to use it. Mole is shown as 6.02 X 10 ^23. When solving problems using mole you want to write down all the given information, label all quantities, then start with what is given and decide on a path to get the answer. When learning this concept we used this diagram to help.


http://media.showme.com/files/28315/pictures/thumbs/492108/first_thumb1352935272.jpg


Today when coming into class I thought I would not be able to understand this concept but once we actually did some practice problems it started to make more sense.