To complete the report you will need to recall information on many different units from this school year. Here is a list of some of those units.
- Chemical and physical changes
- Writing chemical formulas
- Types of reactions
- Predicting products
- Balancing chemical equations
- Percent composition
- Stoichiometry
Rely on your memory yes, but also look through you notes to refresh that memory.
Look over to the right at the bottom of the page for helpful links for surviving chemistry
I dont get how to tell weather or notthe reactions double replacement single ect.. :(
ReplyDeleteLook at the types of reactants you have. If you have two compounds then it is double replacement. A single element and a compound then it is single replacement
ReplyDeleteQuestion, the forth reaction is the only one we need to use the stoichiometry on...right?
ReplyDelete- Jenna Collins
For the fourth reaction, we have to find the mathematical amount of grams it should have. Then use the info in the lab to find out the stoichiometry, right?
ReplyDeleteSince we mixed some of our solutions with water, I found it confusing when writing the balanced equations for some of the reactions. I am not sure if I should include the water in the equations or not.
ReplyDeletefor the first reaction do you include water in the equation because it just filters out?
ReplyDeleteGood Websites for single and double replacement:
ReplyDeleteSingle:http://dl.clackamas.edu/ch104-04/single.htm
Double:http://web.fccj.org/~smilczan/Two5/DR.html
I didn't know which ones with water we were supposed to use as a physical change or a chemical change but then realized that since we had to filter out water in one of them, it was a physical change.
ReplyDeleteI found this site to be helpful for refreshing my memory on predicting products. It reviews how to do it and how to predict a product accurately.
ReplyDeletehttp://www.infoplease.com/cig/chemistry/predicting-reaction-products.html
For the 4th reaction, yes, you need to do the stoichiometry to determine theoretical yield.
ReplyDeleteThe water in the 1st reaction dissolves the substance and allows it to reaction with the NaOH. It creates an aqueous solution. The water does not enter into the reaction and is evaporated by the drying ovens at the end.
ReplyDeleteThanks Julia and Cassie, I will check out these sites. I am going to create a list of sites for my future chemistry students.
ReplyDelete