Investigation - Alka Seltzer Rockets

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Edit   Delete - Last Modified By: dna at 11/01/2014 11:47:01 AM

How is a hypothesis different from a guess?

Edit   Delete - Last Modified By: dna at 11/01/2014 11:43:36 AM
This learning bite is all about testing hypotheses. To find out more about what a hypothesis is, click the link below.
Edit   Delete - Last Modified By: dna at 11/01/2014 11:46:18 AM

If you are doing this learning bite at home, you can still run a small experiment using things from around your house. You could even complete the experiment about rockets listed in the class activities below. Just ask your teacher about what limitations he/she has set for the experiment. Otherwise, you could design your own experiment. remember that the point of the lesson is to try to PREDICT what will happen - but it must be a reasonable prediction, not just a guess.

The website in the link above has some ideas in it if you are stuck looking for something to investigate.

Good luck!

Edit   Delete - Last Modified By: TKH at 27/02/2014 12:38:22 PM

Why Does Alka-Seltzer Fizz?

Watch the following video prior to class to assist in your understanding of Alka-Seltzer tablets.

Edit   Delete - Last Modified By: TKH at 4/03/2014 7:17:42 PM
Please watch this video prior to class
Edit   Delete - Last Modified By: dna at 11/01/2014 11:39:02 AM

Prior to class:

Read the experiment outline and begin to think about ways in which you could modify your rocket.

Write a hypothesis predicting what the effect of more/less reactants will do to the "pop height" and "pop time" of the rocket.

Edit   Delete - Last Modified By: dna at 11/01/2014 11:39:54 AM

Your task is to create an Alka Seltzer Rocket using the method described in the prac outline below. HOWEVER..... your resulting pop-rocket lid must adhere to the limitations given by your teacher. In this way, you will need to experiment with the heights at which the lids come off and/or the time it lifts off compared with the amount of reactants used in order to meet the brief.

Good luck!