Chem Standard 6a Students know the definitions of solute and solvent.

Solute is the substance dissolved in other solutions. Solutes can be a solid, gas, or a liquid. For example if you dissolve salt in water salt is the solute because you need more water to make salt water and you need less salt to make it. Another example is when you dissolve sugar into hot tea. The sugar is the solute and the tea is the solvent.

Solvent is the substances trigger to the solution. It is the key item for solutions. Solvent can be a liquid or sometimes a gas or a solid. For example if you dissolve salt in to water water is the solvent because water is mostly doing all the dissolving causing a solution of salt water.

Unique Japanese cellphone charger

In Japanese class I was watching a video about how Japanese cellphones are more advanced then any cellphone in the world. The video was right about that. There were cellphones that can be your credit card, cellphones that can separate its self, and a lot more unique cellphones. But there was this one cellphone and its cellphone charger that I liked. It was this one.

The cellphone is an ordenary touch screen cellphone. The unique thing is the charger. The charger is that red helm on top. It works like this, in order to charge this cellphone 1st you have to lift up the helm. You will see a pocket to fit the cellphone in the helm. Once you put the cellphone in the helm and then close the helm the phone lights up. The light is being the eye of the helm. While the cellphone is charging the eye moves left to right. I think this cellphone and charger is the most coolest thing I've ever seen.

mini project

On 5/4/10 my class did an experiment about sugar. We had to mix water with sugar and boil it. After that we got a lifesaver candy and tied a string on it and then tied that on a stick. We put the stick on top of a beaker so it'll hang down in to the beaker. After we did that we pour the boiled sugar water in the beaker. I think the sugar will go on to the stringer life saver and make a long line of sugar.

What is Osmosis? Lab

IProposeWe observe osmosis

Links:

http://www.brooklyn.cuny.edu/bc/ahp/LAD/C5/C5_Osmosis.html

http://www.public.iastate.edu/~zool.255/Week_3_activities.htm

Materials:

capillary tube, osmometer, ring stand, dialisis bag, beaker, funnel, ruler, molasses, distilled water.

Procedure:

1. soak dialysis bag in distilled water for 30 minutes.

2. close one side of the bag up by knotting one end of the bag then tie a string over the knot. (be careful not to spill any molasses or rip the bag)

3. hold the open end of the bag open and fill it up with molasses up to about 1cm from the top using the funnels.

4. Tie the upper end of the bag, with a capillary tube inserted at the top of the bag. (Be careful not to have any air between the molasses and the knot at the tube inserted at the top of the bag)

5. As soon as the osmometer is ready, rinse the outside of the bag to remove excess molasses.

6. Submerge the bag in a beaker containing pure water.

7. As soon as the system is stable, mark the capillary tube with a wax pencil.

8. Observe the dialysis bag to spot molasses leaking from the top or bottom. (If leaking, get more sting and tie it shut where it leaks)

9. When the solution inside of the capillary tube stabilizes, record your observation at time 0.

10. Make observations and mark the solution as it ascends in the capillary tube.

11. Record the change in the capillary column in cm every 10 minutes for a period of 60 minutes.

Safety Precautions:

• Do not fool around near glass objects.
• Do not play with the materials.

Scientific Principles:

1. The molasses solution is being pushed up the glass table due to the pressure from the lower concentration of water.

2. Osmosis is the diffusion of water across a membrane.

3. Solutions are isotomic if they contain the same number of solute of a particular kind.

4. A solution is hypertonic with respect to another when it contains more solute of a particular kind than the hypotonic solution.

5. Water diffuses from high concentration to low concentration.

DS xl

I remember the day when the 1st DS system came out. Then a ds lite came. Then dsi. Now the new and much more bigger ds had came out. It is not bigger then the original ds but it is bigger than the ds lite and the dsi. I am hopeing nintendo will make better ds's in the future.

dsi

David Webb

On march 23rd we had a guess speaker ,David Webb, who was teaching us all about gasses. The David Webb brought a weightless vacuum where it can suck the air in that atomosphere and made a marshmellow shrivle. But when he start putting air in the marshmellow got very big. I thought the guess speakers taught me a lot of stuff about gases and it really helped me.

vacuum

japanese news project

In my Japanese class I have a project to do by April 19th. I have to talk about local news for the projects. My other group member have to do like cooking news, weather news, and all kinds of different news. I hope my group will do well and get a good grade in this big project.





http://dictionary.reference.com/browse/project