Experimental Design & Alka Seltzer Lab

August 27th

Today in class we started the Alka-Seltzer Lab. 

1. We went through what the problem of an experiment is
2. We learned that a vaild experiment includes variables:  

• Independent variable- what you are testing
• Dependent variable-what you are measuring
• Controlled variable-what is being kept the same

                                    ** See Moodle for full notes

     3. Keep collecting data until you get the same results. 

The lab variables were the film canister, the Alka-Seltzer tablet, and water.

Each trial we did something different, like changing the amount of water. 

We timed each trial. 

Alka Seltzer rocket after it reacted

Watch video for reaction

Homework:

Prepare part 3 of the lab

Determine the variables

Mary K.