Happy Tuesday Bellwork: Quickwrite – In 42 words, summarize your HW using the words concentration, diffusion, osmosis, equilibrium, isotonic, hypertonic, and hypotonic. On Page 17 of your I.A.N. Title “Egg Lab” and draw the following data table: Original Mass Final Mass Differen ce in Mass Appearan ce of Egg VINEGAR XXXXXXXX X XXXXXXXX X SYRUP
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Happy Tuesday Bellwork: Quickwrite – In 42 words, summarize your HW using the words concentration, diffusion, osmosis, equilibrium, isotonic, hypertonic,
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Happy Tuesday Bellwork:
Quickwrite – In 42 words, summarize your HW using the words concentration, diffusion,
osmosis, equilibrium, isotonic, hypertonic, and hypotonic.
On Page 17 of your I.A.N. Title “Egg Lab” and draw the following data table:
Original Mass
Final Mass Difference in Mass
Appearance of Egg
VINEGAR XXXXXXXXX XXXXXXXXX
SYRUP
WATER
On Page 17 of your I.A.N. Title “Egg Lab” and draw the following data table:
Original Mass
Final Mass Difference in Mass
Appearance of Egg
VINEGAR XXXXXXXXX XXXXXXXXX
SYRUP
WATER
The shell that surrounded your egg was dissolved by soaking the egg in vinegar for 24 hours. The vinegar dissolved the hard calcium carbonate shell exposing the semi-permeable membrane that surrounds the egg. This membrane is very similar to the plasma membrane that surrounds all of our cells. The purpose of this lab is to simulate osmosis across a plasma membrane. Students will receive one egg per lab table.
Day 1 Procedure…
1. Using your hands, carefully remove your egg from the vinegar and use a paper towel to pat it dry.
2. On your data table, record the firmness and overall appearance of your egg in the VINEGAR row.
3. Mass (weigh) your egg on a triple beam balance and record your results on your data table. Enter the weight under the “Final Mass” for VINEGAR and the “Original Mass” for SYRUP.
4. Using a piece of glassware tape and a marker, label the beaker with your period and table letter. Cover the egg with syrup until it begins to float.
5. Allow your egg to sit for 24 hours.
Diffusion Notes Why does food coloring spread out in
water?
Every living thing lives in a liquid environment that it needs to survive.
One of the most important functions of the cell membrane is to regulate the movement of
dissolved molecules from the liquid on one side of the membrane to the liquid on the other
side.
The concentration is the amount of a
substance dissolved into water.
Kool-Aid
Beaker 1 Beaker 3Beaker 2
In a solution, particles are constantly
moving.
They collide with one
another and tend to spread out randomly.
Particles move from an area of high concentration to an area of low