8/25/2011
Post date: Aug 25, 2011 4:59:18 PM
Bell Ringer (spoken, not written): What is a chemical reaction?
Go over standards list, add to portfolio with table of contents
Mentos and Diet Coke lab
Introduction
This fountain is sometimes HUGE, but I've had lousy results so far. I want to figure out what we can change to make this better.
View mentos and diet coke fountain as is
Variables
Discuss what we could change in process that might result in taller fountains:
# of mentos,
type of mentos,
type of soda,
size of soda container,
crushed up mentos,
shake up soda,
temperature of soda,
drop method for mentos.
Get into groups, pick top two to investigate. For each, decide on 3 variations that you'll try to see what works best
Measurements
Discuss what we'll measure and how to determine which changes improve our results
Height - meter stick, measured from top of bottle to highest point of fountain, may need to duct tape several meter sticks together
Time - stopwatch, start when mentos drop and stop when fountain reaches highest point