Use of our material:

All original materials link are created by Kelly Riedell for students in Biology/Zoology classes at Brookings High School  and are licensed under a Creative Commons Atribution-NonCommercial-ShareAlike 4.0 International License.

We have worked very hard on activities, Powerpoints/games/worksheets, etc to make this a resource for our students. If you are using our materials, please give us credit for our efforts by listing us as a source with links to our site. DO NOT USE these materials for commercial purposes. PLEASE DO NOT POST ANSWER KEYS FOR OUR MATERIALS TO OTHER WEBSITES!
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OSMOSIS DIFFUSION LABS

Starch/Glucose
OSMOSIS DIFFUSION		 SMELLY BALLOONS EGG OSMOSIS         OSMOSIS with POTATOES

 

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OSMOSIS DIFFUSION LAB
There are a number of variations of this lab
You can order kits from Wards, but we found the lab handout that accompanies the kit is confusing for students. So we made our own.

What you will need:
7 oz cups (1/pair of students)
Dialysis tubing 
Liquid starch
Glucose
2 Glucose test strips
red, blue, green markers
Balance (optional)

USING A BALANCE
(Compare mass of bags before/after)
Copy the lab  handout     Answers
Slide show        
(Copy and use as lab station signs)		 WITHOUT BALANCE
(Compare by drawing line on bag & cup)
Copy lab handout            Answers   
Slide show                
(Copy and use as lab station signs)

SMELLY BALLOONS

Fill different balloons with different liquid flavorings 
(available in cooking aisle)
Banana, root beer, strawberry, mint, etc and see if students can identify the smells.

Handout/?'s (used with egg osmosis/fish demo)

OSMOSIS with POTATOES
POTATO DIFFUSION LAB
Lab packet

 

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