During the time at each station should need to accomplish the task that is written on each instruction sheet, write down the chemical equation, take notes, provided evidence for a chemical reaction and clean up the station see student work. Which physical property facilitated its formation?
We will work through all five reaction types and predict what the products will be. Please record the definition of this in your notes. Before you put a coefficient of 2 in front of the oxygen on the product side, you must know whether carbon or oxygen is a diatomic element.
Types of Chemical Reactions Lab Demos students After having many students struggle on this activity and not complete all portions of the lab report for each station, I decided not to grade it and thought it would be more beneficial to go over it as a class.
If students have difficulty predicting products, I do not deduct points as long as effort to predict them has been put forth. Composition reaction Calculate the percent yield of the product. Keep in mind that decomposition reactions are essentially the opposite of synthesis reactions.
Write the following example on the board: This can be done by making sure each student understands important aspects of the reaction at every station, such as how to balance the chemical equation, what observations where used for evidence and how predict the product when necessary, before moving on to the next station.
Which natural law applies? This can very easily over looked but can make the difference between confusion and a successful lab. The charges are shown so that you can see how they are redistributed.
So mass is conserved even if the products present in the reaction vessel weigh less than the reactants or more in the case of the magnesium burning. Lead Iodide is the precipitate.
Having students predict the product is the inquiry portion of the lesson is not meant to be weighted as the main objective of the lesson.
It is not a diatomic element. As they sitting with their groups I am walking around helping students predict the products and looking to see who had difficulty determining the type of reaction. Once you have reviewed writing and naming ionic compounds, you are ready to begin the lesson on predicting products.
Station 2 Write the balance equation for this reaction, including the state of matter for each reagent. They are closely related in terms of how you will predict the products of the reaction.
I also urge them to look at the front page of their lab report and use the evidence for chemical reactions to aid them in completing the lab. Double-replacement reaction Calculate the number of moles used of each reactant using the concentrations.
There is a redistribution of charge when metals and nonmetals are charged e. They will use it to determine how the reaction will progress. Its solubility facilitated its formation. The equation is now balanced without adding any coefficients.
The only time that you can add a subscript in an equation is when there is a diatomic element. The percent yield is low because the reaction was not complete; I still had some magnesium left and I probably lost mass while measuring the mass of the magnesium after the reaction.
I find that it requires them to be able to synthesize a years worth of chemistry and apply it to a relatively new concept of predicting products. The main goal of the last part of the class is to let students discuss the seven stations with their group and reflect upon their observations from each station.
Therefore, you will need to add a subscript of 2, not a coefficient of 2 to oxygen. I only took one day to do this lab and I think it could have been spread out into two days by giving students a longer opportunity at each station.
They are very similar with a difference of 0. Students will have to look at the formula given to determine which copper ion to use. This means that oxygen is unstable alone and will be found in nature as a pair.
Decomposition reaction Calculate the mass of each product. Write the balance equation for this reaction, including the state of matter for each reagent.
Station 3 Write the balance equation for this reaction, including the state of matter for each reagent. Station 4 Write the balance equation for this reaction, including the state of matter for each reagent. This is initially a lot for students to do in a 4 minutes, but after 2 stations they get the hang of the procedures and complete the task in the allotted time.This is the last step in the process of writing a chemical equation.
Students will: as this is an important skill for predicting products. Students will now try predicting the products of a double displacement reaction. Write the following example on the board. What is the proper way to smell a substance in the lab? Why should care be taken when smelling a gas such as ammonia?
3. What is the role of a catalyst in a reaction/ How can you tell when a substance serves as a catalyst? Revisiting Chemistry – Equation Writing and Predicting Products Author: Zoe Badcock Last modified by: andrewt. Equation Writing And Predicting Products Lab 25 Answer Key Equation Writing And Predicting Products Lab 25 Answer Key - Title Ebooks: Equation Writing And Predicting Products Lab 25 Answer Key YAHOO ANSWERS CC CARBIDE GO KART CARBURETOR MANUAL FORD NEW HOLLAND SERVICE MANUAL TOTAL.
Predicting Products In a common synthesis reaction, sodium metal is lowered into a bottle of chlorine gas. Predict the product, substitute symbols and formulas for names, and then balance the equation. Lab Identification of Reaction Products: What Are the Products of the Chemical Reactions?
Introduction. Chemical reactions are the. Predicting Products & Reaction Types Lab Report. You are here: Home; Science; Write the balance equation for this reaction, including the state of matter for each reagent. 2Mg(s) + O 2 (g)->2MgO(s) + energy. Tags: lab Predicting products Reaction Report Types.
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