Argument-Driven Inquiry in Chemistry: Half fill the trough or bowl with water. They should collect data to show if their hypotheses are correct or not. The students will be told that no new reactants were introduced There is some acceleration of the reaction rate due to the rise in temperature.
If necessary, students should come up with additional hypotheses to test as needed. This can be seen on the graph, as the slope becomes less steep and then levels out when the reaction has stopped when no more gas is produced. The lycopodium powder will then be allowed to fall down in dust format onto the flame, and a ball of flame will be produced.
High School Description and Teaching Materials In order to carry out this activity, the following materials will be needed: They will then construct a data table to collect data in for their given hypotheses.
I have never actually carried out this activity using this inquiry based method. A tablet of alka-seltzer will then be placed into the test tube. When I asked my students how we would all consistently decide on when the solution is opaque, many of them suggested to place some sort of object on the other side of the beaker so that we would all stop the timer when the object was no longer visible.
As a teacher, it was fun to watch their level of excitement over something so seemingly simple. All other materials should be standard chemistry classroom materials or are easily obtained from the grocery store.
Each activity contains comprehensive information for teachers and technicians, including full technical notes and step-by-step procedures. Students will turn in their collected data in a lab write-up, where they will summarize their findings. What are we going to do with our data once we have it?
Though most boards had similar claims, they often differed in what evidence they chose to present. A handout explaining the lab will be distributed. In the past, students were told what exactly they should use as their independent variable in the reaction.
However the acid is in excess, so it is mainly the loss of magnesium surface area becomes smaller that causes the change in the rate.
This resource image was supplied by science photo library https: As the magnesium is used up, the rate falls. How are we going to figure out our concentrations in terms of Molarity? Each experiment run will need 50 cm3.
I will monitor their progress, seeing what kind of conclusions the students obtain. My guess is that students will struggle to identify some possible factors influencing the reaction rate.
This is the process I love doing the most. I will monitor progress in the lab to see what kind of results students are obtaining. The total volume of each solution should be the same in each beaker. This activity differs from how rates of chemical reactions have been previously covered in our curriculum.Investigating the solid–gas phase reaction between WO 3 powder, NH 3 and H 2 O vapors to prepare ammonium paratungstate.
Investigating the Rate of Reaction Between Magnesium Ribbon and Hydrochloric Acid Aim: To find out the rate in which magnesium ribbon dissolves in different. Investigating Chemical Reactions: Factors Which Influence the Rate of a Reaction.
different things that could be done to change the rate at which the carbon dioxide gas is produced in the chemical reaction between HCl and alka-seltzer.
Various materials, including those listed in the materials section will be provided for the students, or. More about Investigating the Reactions Between Polyvinyl Alcohol and Borax in Making a Rubber Ball Investigating the Rate of Reaction Between Marble Chips (Calcium Carbonate) and.
Electrochemistry: Galvanic Cells and the Nernst Equation Step 1: Investigating redox reactions of some metals and solutions of metal salts. The following movie shows an experiment that tells us whether there is a redox reaction between a metal (Zn) and a metal ion (Cu 2+).
Investigating the Reaction Between Bromine and Cyclohexane By adding bromine to a mixture of Cyclohexane and water, and placing the mixture under a bright light and shaking from time to time.Download