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Monday 11 February 2013

Lab- Science Report

November 12th, 2008


Purpose: To change independent variables and countenance the reaction run in a goal while of 45 seconds.

meditation: I think that I can change the gait of reaction to occur either slower or immediate by changing the temperature of the piss, the concentration of the water. Also, by changing the sum up of the pad, and the surface area of it (crushed, not crushed). Most likely with less(prenominal) water, and more tablet, the fast the reaction pass on go, and vise versa. I expect that if the tablet is crushed, the reaction will occur quicker compared to a tablet that is not crushed.

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Materials: In order to do this examine you must have:

-safety goggles
-2 Alka- soda tablets
-plastic film canister
- gradatory cylinder (at least measures one hundred mL)
-water/ice water
-watch/timer
-thermometer
Procedure: Follow these directions to train a safe a successful try out:

- gift your safety goggles on
-Lay out all materials on a lab clean and clear table
-Fill the graduated cylinder with water with your choice of measurement
-Take temperature of the water
-Pour the water into the plastic canister
-Crush or break off a part of the Alka-Seltzer tablet
-Put tablet into the canister with water
- rapidly seal the lid to the canister and set back
-Time your experiment and wait for blast off
Observations: As my experiment failed, I used anothers data, as I will describe what they did in their experiment to attain these results

Before the experiment: Taking in consideration the factors that can affect the regulate of a chemical reaction and




Analyzing and Discussing:


Analysis and Evaluation

d) The time of reactions depended upon multiple variables. The size and surface area (crushed, not crushed) seemed to have a major affect on the results. If too overmuch of the Alka-Seltzer tablet was put in, then the reaction would occur slower. Also, if the tablet were crushed it would blast in less then 45 seconds. Depending...If you want to get a full essay, order it on our website: Ordercustompaper.com



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