AMI (Alternative Method of Instruction) No. 1
Movement of a
Substance Across the Cell Membrane.
Title your paper with the title of the experiment.
What you will need: Egg, syrup (any kind) or soda (cola) and vinegar.
Most of us have these materials at home so this shouldn’t be too much of a problem. If you don’t have them, and I’ve not sent them home with you, you will be allowed to make this assignment up.
Procedure: Place an egg (straight from the refrigerator) and place it in vinegar until the egg is covered with vinegar. Observe what you see after a few hours. Record your observations on paper. Place back in vinegar until the shell is completely removed. Again, record your observations.
After the shell has been removed by the vinegar, place the egg in syrup or any type soda that contains sugar for several hours and record your results. Leave the egg in the sugary substance overnight and record your observations.
Remove the egg and place it in regular tap (or well) water for several hours and record your observations. Leave the egg in water overnight and record your observatons.
Answer the following questions on your paper.
What happened to the shell?
What substance is the vinegar?
What happened to the mass of the egg after placing it in a sugary substance? (increase or decrease) What happend to the mass of the egg after it was placed in water? (increase or decrease)
Why do you think grocery stores spray their produce?
What happens to vegetation along the side of the road in winter when salt trucks spread the salt?
AMI No. 2
All matter is composed of atoms. Record on a piece of paper things around your house that is composed of as many elements from the periodic table as you can find. For example, some cookware in the kitchen may have bottoms that are covered in the element copper (Cu). Be sure to think of matter in all phases as well, such as metals, and non metals. If the element is contained in certain substance, you may list it as well. Do your best to list as many as you can and write the names of the elements correctly and use their proper symbols.