If they do not ask questions then I ask them questions using cold call to check for understanding. It aligns to the NGSS Practice of the Scientist of Planning and carrying out investigations—students must plan an investigation into how closely theoretical yield and actual yield align.
This is the first formal lab report I am asking students to write this year. I have chosen this approach because sometimes students are afraid to ask questions but they have questions that they need to ask. Why are you doing this?
The experimental design is the first sections of the lab report, including the introduction, a hypothesis, the procedure and materials, and a blank data table. What are the reactants in this experiment?
Second, it helps give momentum to their lab report. For the hypothesis, students use stoichiometry to predict how much carbon dioxide is produced when mixing a known amount of vinegar and baking soda. Once I have taken attendance I ask students what questions they have.
Using stoichiometry, students can predict the amount of product they produce and then compare that prediction to their actual yield.
First, it forces students to articulate what it is they will do at the lab bench before they begin using chemicals and equipment. At this point in class I reveal that each student will have their own amount of vinegar that is unique to them.
Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction because students use proportional relationships between masses of atoms in the reactants and the products, and the translation of these relationships to the macroscopic scale using the mole Lab report experiment 7 investigating stoichiometry the conversion from the atomic to the macroscopic scale.
Use mathematical representations to support the claim that atoms, and therefore mass, are conserved during a chemical reaction. This lab report video shows how I discuss the first part of the lab report. On the second day they conduct the lab, and on the third day they write and critique their lab report.
Sometimes I mix up my approach. Baking soda A vessel to mix the two reactants An electronic balance that measures at an accuracy of 0. It aligns to the NGSS Crosscutting Concept of Stability and Change because the experimental design is about quantifying changes that reactants undergo as they become products.
This serves two purposes. First I take questions, and then I ask questions that get at the key points. Introduction This lesson is part of a three-day lab. In the first day students design their lab, which includes solving a stoichiometry problem.
I want them to see that it is typed, that contains headings and data tables that have labels on them, and that it contains certain sections.
The materials needed for this lesson are simply a word processor, but in order to conduct the experiment in a subsequent lesson they will need the following: This instructional choice reflects my strategy of breaking down larger projects into smaller manageable ones.
First students do the design, and on subsequent days they conduct their experiment and then analyze their results to writes a conclusion. I start by showing what a lab report looks like by using this Sample Student Lab Report. In terms of prior knowledge or skills, students should have a solid understanding of how to conduct gram-to-gram conversions using stoichiometry as described in this lesson.
I note then that the first thing students need to do is to write their experimental design.This lab is adapted from: Kristen L. Cacciatore and Hannah Sevian, Teaching Lab Report Writing through Inquiry: A Green Chemistry Stoichiometry Experiment for General Chemistry, Journal of Chemical Education, 83(7), Nov 30, · This video is about the AP Chemistry Lab Experiment #7: The Stoichiometry of a Chemical Reaction.
Chemistry Laboratory Experiment 7: Determination of Reaction Stoichiometry and Chemical Equilibrium Provide a sentence synopsis of the objectives and procedures of the experiment below.
Copy this into your lab book, to serve as an introduction to this experiment. In this particular lab we used stoichiometry, the part of chemistry that studies amounts of substances that are involved in STOICHIOMETRY LAB REPORT.
By: Haley Gorman. Lab Partners: Mikko O., Jahaad J., & Nadine C. we used stoiciometry to discover the expected amount of sodium acetate we would get from this experiment. Since we are. Page 3 of 3 5. Gently heat the solution in the covered evaporating dish with a Bunsen burner flame in order to remove the water generated in the reaction (as well as any excess HCl present).
The flame should be adjusted to a lower temperature and wafted under the evaporating dish constantly. Amber Gray June 13, A.
Mendez Chem Experiment 7 Investigating Stoichiometry with Sodium Salts of Carbonic Acid Pre-Lab Summary of Concepts Stoichiometry is a branch of chemistry that deals with the relative quantities of reactants and products in chemical reactions.Download