Onion

OBJECTIVE: Observe de osmosis in the onion cells when we put salt water and distilled water

MATERIAL:

•   
• Knife
• Distilled water
• Salty water
• Microscope
• Forceps
• Dropper
• A piece of onion

PROCEDURE:

1. Take the onion and cut two slim sheets with a knife
2. Put the sheets on a different slides and observe they in the miscrocope the size of the onion cells
3. In one sample put some drops of distilled water and in the other sample also put some drops but of salty water
4. In the microscope observe the differences

RESULTS: 

                        

When we put distilled water on the onion sample, the cells inflate,and when we put salty eater, the cell gathers.

This happens because the cells equalise the enviroment

QUESTIONS:

1. When the salt solution was added to the onion cells where was the greator concentration of water? The greator concentration of water was outside the onion cells.
2. Which kind of transport does the water follow across the membrane? The transport that does the water follow across the membrane is the diffusion, because water is formed by molecules.

Natural Gum

OBJECTIVE: Make a natural gum
MATERIAL:

• 
• 1/2 cup of beeswax (make sure it is fit for human consumption) 
• 1 cup of impalpable sugar 
• 3 tablespoons honey 
• Essence of mint or cinnamon
• bunsen burner
• fire
• spatula 
• pipet
• knifen ( for cut the beeswax)
• 4 beakers (2 bigs and 2 smalls)

PROCEDURE:

1. First we take 2 beakers
2. Then we do  water bath (Bany maria)
3. Then we put the beakers in a bunsen burner (the fire a high temperature)
4. Inside the beaker we put the wax (Wax needs to melt) 
5. We have to remove the wax until smooth and viscous.
6. When the wax is smoothy and viscous we add the honey
7. Stir until the honey mixed with the wax.
8. We add the flavoring (5 drops of mint)
9. Finally we add the sugar (is necessari that the mixture is thicken)
10. We put the misxure in a mold
11.