1. 1. Students placed a raw egg without its shell into a highly concentrated solution of sugar. If the amount of sugar in the solution is greater than in the egg, which of these is most likely to occur? A Water will flow into the egg and cause the egg to expand. B Water will flow out of the egg and cause the egg to shrink. C The sugar will dissolve the egg. D The sugar will break the egg into pieces. Bellwork 1-8-2015 Answer on your sheet of notebook paper.

2. Objectives Explain how materials move through simple diffusion. (SPI 0707.1.5) Students will be able to analyze how plant and animal cells are organized to carry on the processes of life.

3. 49. Osmosis & Diffusion of an Egg

4. Osmosis and Diffusion of an Egg * The egg shell has been dissolved and what is left is the cell membrane. * The inside of the egg is made mostly of water. ~ How will be know that the water has moved into the egg or outside of the egg? ~How do you think we can make that happen?

5. Osmosis and Diffusion of an Egg Copy this chart into your notebook. GroupControl #1Control #2Control #3Independent Variable Dependent Variable #1 (Control) #2 (experimental) #3 (experimental)

6. Table Top Sort Each person will get a small handful of yellow and blue counters. Blue = Water Yellow = Sugar Pretend that there is an imaginary membrane in the middle of your desk. 1. Create a scenario with a high concentration of water on one side and a low concentration of water on the other side. Distribute the sugar evenly. 2. Move ONLY THE WATER to create equilibrium.

7. Practice Questions A student put a few drops of lemon juice into an uninflated balloon. The student tied a knot in the balloon, placed in a shoebox and covered it with a lid. The following day, the student opened the box and was able to smell lemon in the box. Through what process were molecules able to pass through the balloon? Arespiration Bfermentation Cdiffusion Dradiation

8. A student adds drops of dye to a beaker of room-temperature water, as shown in the diagram below. Which diagram best shows the end result of diffusion?

9. A cell has a large concentration of salt molecules inside of the cell and a small concentration of salt molecules outside of the cell. Which of the following is most likely to happen to this cell? AWater molecules will diffuse out of the cell BWater molecules will diffuse into the cell CSalt molecules will diffuse out of the cell DSalt molecules will diffuse into the cell

10. The diagrams below show concentrations of particles inside and outside a cell. In which situation would particles move OUT of the cell through diffusion?

11. Diffusion/Osmosis Drawings 1.Fold your piece of paper in half. 2.Label the left side “Before” and the right side “After”. 3.Illustrate a scenario that demonstrates either diffusion or osmosis. 4.Drawings need to be detailed and colorful.