Physics, 10.12.2020 17:30, jdvazquez18p7a7vs
Activity B: Conservation of matterGet the Gizmo ready:Click Reset. Select Hydrogen peroxide for Reactant 1and Potassium iodidefor Reactant 2.Goal: How does the mass change(or not change)during a chemical reaction?1.Review: In this reaction, hydrogen peroxide is added to a potassium iodide solution. Click Playand observe the reaction. A.What do you observe? B. What evidence do you see that a chemical reaction is taking place? C. Replay the reaction and use the available tools (Thermometer, Phenol red, Glowing splint, Burningsplint.)What do these tools indicate?(Note: You will need to switch to the Gas collectionsetup to use the splint.)Thermometer: Phenol red: Glowing splint: Burning splint: 2.Record: Click Reset, and changebackto the Normal setup. Notice the mass shown on the electronic balance. A.What is the starting mass for this reaction? B. Click Play. What is the mass when the reaction has finished? C. How does the mass changein this reaction? 3.Record: Click Reset, and select the Gas collection setup. Notice that this setup is heavier than the normal setup, but the amounts of reactants is the same. A.What is the starting mass for this reaction? B. How do you think the mass will change during the reaction? C. Click Play. What is the mass when the reaction has finished? (Activity B continued on next page) 2018Activity B (continued from previous page)4.Explain:Why do you think that mass was lost when the reaction was done in the normal setup, but stayed the same when the reaction was done in the gas collection setup? A fundamental law of chemistry is conservation of matter. This law states that, in a chemical reaction, matter can neither be created nor destroyed. That means that, as long as nothing escapes from the system, the total mass measured at the start of the reaction will be the same as the total mass at the end of the reaction CORRECT ANSWERS WILL GET BRAINLIEST
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Activity B: Conservation of matterGet the Gizmo ready:Click Reset. Select Hydrogen peroxide for Rea...
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