Friday. October 25th

This post is for last Friday's class. Today we did silent labs. My group got to about 3 labs. The first one we did was the heater with the balloon. We were supposed to hold the balloon to the heater for about a minute with out melting it and observe what happened. The first time the balloon started to inflate but then there was also some static and it followed Seth wherever he went. The second time we did it, it floated up a little bit. The next lab was trying to get the egg out of the beaker. This lab was pretty stinky. But we got the egg out! First we had to put the hot water in and swish it around and then dump it out and then put the egg in the flask and tipped it upside down to get the rest of the water out. Then we had to blow on it and it almost came out, and finally with a helpful hint from Mrs. Sorensen to put the flask in the cold water it finally popped right out! And that's what went down in chemistry on Friday! :)

Tuesday November 25, 2011

Today mrs. Sorensen showed the class a few videos about triple point which is a point In time where all of the states of matter exist at once (solid, liquid, and gas). Then we discussed how sublimation happens and some examples of it like air fresheners or mothballs. Next we looked at phase diagram. If the point is below100 it is a solid, if it's at 100 it's a liquid and if the point is above 100 it will be a gas. Then we answered a few questions over triple point. Next we discussed where youbwo
uld want to be if u wanted to boil water fast, Colorado or new Orleans

Happy Mole Day!!

Celebrating 6.02 X 10^23!

Happy mole day!!!! :)

Today is October 24th; one day after mole day. We didn't have school yesterday so we celebrated today. we learned what mole is (6.02 x 10^23). We spent the class period coloring pictures of moles and eating cake and brownies. We also listened to Pandora. It was a pretty fun day in chemistry :)

October 20th, 3rd period chemistry

I'm trying to not make this a very boring blog.... Today we are working with the graphs. Also, we answered questions about the vaporization lab. And, its really cold out.. but I'm over it.. Everybody worked on completing the graph with their partner. it would be great if there were more outlets.. my battery is about to die.. I guess the question of the day that is baffling everyone is... "do we have an assembly?!" but nobody knows(<---- creepy voice..) We are supposed to finish up the graph and questions from home... have a great day.

October 19, 2011 Wednesday

Today we went over the homework assignment about triple point. Then we did the dry ice lab if we didn't finish last time. Last we worked on the vaporation graph on google docs.

Tuesday October 18th 2011

Today is my 1/4 birthday! Today in class we learned about freezing points, boiling points, and phases by doing a worksheet. Then we had time to work on a vaporization graph and Quia quizzes.

The Daily Blog

Today we didnt do too much, we had a sub Mama Bertsch. She gave us our instructions and the whole period we worked on the three assesments Mrs. Sorensen gave us last week. We have to get at least 80% on each of them before we can be done.

Ice Lab (Thursday)

Today we worked on freezing water by filling a beaker full of ice and salt then put 10mL of water in a test tube and holding it in the ice for 15 minutes. We watched the temperate drop on our calculators and noticed that it stopped at -2 and would move slightly up and down.
When we took out the test tube we saw that ice was forming in the tube. Not all of the water had frozen.

science world

April 19 2010

Lights Camera Action

This article was about a family hosting a TV show for people to learn about nature. Ryan Jacobus and his family decided to move to Costa Rica when he was 10. The reason they decided to do this was Ryan and his two younger brothers were always interested in nature shows and they would go outside after them and pretend that they were looking for nature. They moved to Costa Rica and came up with the idea of hosting a TV show for people to learn and care for nature. The artical is explaining about how Ryan is getting up a 4 in the morning to go to a observation site to study some migratory birds. The artical said that Ryan had to go up there 4 times before he actually go to see them. It explains that the boys want to teach people that nature is apart of us and that we should take care of it. Another reason why the boys want to show people this is because rought 25% of our medicine were derived from plant life. The family would like to see videos other people have made to see what is in their backyards. They are incouraging classrooms to do this for them. The name of the TV show is called Super Natural Adventures. They seem to be enjoying themselves very much.

This is my blog about reading magazine articales about sience and summerizing about what we learned. I found the artical i read very interesting that a normal American family decides to move to Costa Rica to help people learn about nature by creating a TV show.

Jessica Starman

Science world

October 5,2009

Disease Detectives

In San Antonio, Texas, High school two students started to show flu like symptoms and the high school was shut down. They normally wouldn't act like this for flu symptoms but they believed that they had the h1n1 virus which was first and Mexico and then spread to the united states and Canada.Silk's team showed up in Texas to examine the H1N1 out break. There were only a few amount of students at the high school had caught the virus but there could have also been other cases that had not been detected yet. Silk created a case definition to help identify who might have gotten the H1N1 virus. they were looking for anyone with upper respiratory infection. While they were trying to find out who was infected they were also trying to figure out why.They were also trying to figure out the origin of this virus and they believe that it originated from pigs which is how it got the nick name swine flu. The more they researched they found that the virus also contained genes from bird and human flu virus also. Silk's team decided that the H1N1 virus may not be As dangerous as they seem. Antiviral drugs can treat H1N1 and be very effective. Still the best treatment and way to prevent from getting the H1N1 is still to get a vaccine.

Magazine Articles

ScienceWorld
April 9, 2010
Hairy Hearing

A man named Radhakant Bajpal has made a Guinness World Record. He made the world record for the longest ear hair. When they measured his hair from the outer ear it was 13.2 centimeter (5.2 inches) long. A dermatologist from North Carolina was explaining about how hair on your body grows at the same rate, but some fall out before others. He also explained what a hair follicle (is like a root of a plant) was. Dermatologist say that the hair is coming from extra large follicles under the skin of his ears. Dermatologist said he was lucky just to have hair grow out of his ear, and not his nose too.


ScienceWorld
April 9, 2010
Sleep Deprived

A man named Danice Eaton led a study on teenage sleep at the Center for Disease Control and Prevention. He found out that about 92% of high school students don't get the right amount of sleep at night. According to the National Sleep Foundation teenagers should be getting at least 9 hours of sleep a night. Danice Eaton did a study that found out that to little of sleep can lead teenagers to depression, headaches, and very poor grades. It's very important teenagers get the right amount of sleep.

ScienceWorld
April 9, 2010
Out To Dry

Today dyers are some of the biggest electricity hogs in America. Many people have chose to have money and energy and line dry their clothing. But there are also many people who don't like the look of clotheslines. It says a few communities have even banned them. A group called Project Laundry List is fighting the right to hang clothing outside to dry. Using clotheslines can reduce households energy use by 8%, and there are many more benefits to using clotheslines. Also they make your clothes smell better and make them last longer says Alexander Lee, executive director of Project Laundry List.

10/11/11 Chemistry

Today 10/11/11


Mrs. Sorensen was not here today and we went in the library and did the quiz things.
In Chemistry we took 2 assessment quiz like things.
We couldn't do some of the question on the States of Matter Quiz because there was no graph and you were supposed to answer the question and to get the information you had to look at the graph. The 3 questions you couldn't answer are #1,14,20.

Monday, October 10th, 2011

Today we are making a spreadsheet over our vaporization lab. My partner and I did methanol and water. We recorded the time and temp. Then we discussed what flubber and ooblec was-liquid, or solid. Flubber stretched if pulled slowly, but broke if you pulled it hard and fast. Also it took ink. It can also bounce. Oobleck is runny, but if you shake it, it will stay in the container.

Vaporization of Liquids

Vaporization of Liquids

In this experiment we tested the temperature of which each liquid vaporized. In my group, we tested Acetone and Ethanol.

Materials Needed:
5cm^2 of Paper Towel
Liquid of Choice - (Ethanol/Acetone)
Non Latex Rubber Bands
Graphing Calculator
Temperature Probe

Procedure:
The first step that you need to do is attach your temperature probe to your graphing calculator. You choose the option for it to record every .5 of a second, and set it to graph for 2 minutes (120 Seconds). You take the end of the temperature probe and put the 5x5cm of paper towel on it. Use the rubber band to secure it to the probe. Once you have your probe all set up, you dip the end into the liquid and hold it in for about 3 seconds. after this, quickly lay it down flat on the table and do not move it. Drafts in the room can affect your data because the wind can cool it down faster. Once you've got this all done hit start on your calculator and then wait till it gets done. Then record your results.

Karsyn Blog for 10/7/11

In class today we finished up the lab vaporization of liquids. We found the temperature change of 2 different liquids in two minutes.we also finished up the oobleck lab and the flubber lab.

To make Oobleck:

• Dixi cup of water


• add corn starch


• stir

To make Flubber:

• 30 ML of water


• 2 spatula scoops of borax


• heat


• 60 ML of glue


• 30 ML of water


• stir


• add 2-4 drops of food coloring

Wednesday Oct 5, 2011

Today in Chemistry Mrs. Sorensen was gone. Mr. Blythe was the teacher. We ended up not finishing the flubber and Oobleck, but we will finish it Thursday Oct 6, 2011. We watched Mythbusters and had to answers 10 questions about one of the myths that was tested.

10/4/2011 Chemistry

Today in chemistry, first we went to page 399 in the textbook and discussed the states of matter.

Solid: amorphous or crystalline, definite shape and volume

Liquid: no definite shape, definite volume

Gas: no definite shape or volume

Discussed information:

The density of solid materials is usually more dense than the other states of matter, with the exception of water and some other materials. Water expands as it freezes, instead of shrinking in volume like most materials. This is why ice floats. Crystalline solids have molecules that are arranged in a repeating pattern. Most solids are crystalline. Mrs. Sorensen makes an analogy between little kids and the states of matter, in warm weather they run around (like a gas' molecules move quickly with no order), in fall temperatures they kind of huddle up, but still run around a bit (like a liquid's molecules), and in winter they huddle up (like a solid). Crystalline solids sometimes form crystals. We briefly discussed what a unit cell (page 400) was, and then we read about amorphous solids (page 403). We discussed how the myth started that glass is a liquid, but it is actually is an amorphous solid, and how some old textbooks say that it is a liquid. This myth was started by the observation that in old houses, the bottoms of the windows were thicker than the tops. We also discussed that the bigger the crystals, the more imperfections that they have and the less clear they are. Mrs. Sorensen also has two bouncy balls, one that is a "happy" ball and one that is a "sad" ball. They look exactly the same, but the "sad" ball is an amorphous solid and the "happy" ball is a crystalline solid, and the "happy" ball bounces and the "sad" ball does not.

(page 397) We also discussed viscosity, which is a measure of the resistance of a liquid to flow. Mrs. Sorensen also "raced" marbles inside of graduated cylinders with different liquids inside. Two of the liquids did not allow the marble to quickly move down, and they went very slowly. One of the liquids had a dent in the surface because of the marble impact. Seth dropped his marble too quickly and we had to retest between him and Brandon, with the result that Brandon's was found to be faster. Dustin's marble was in 3rd place, and Carson's marble was last. The fastest liquid was water, the second fastest was bubble water, the third fastest was corn syrup and the least fast was Germ-X.

Later, we started to make oobleck and flubber.

Oobleck:

Dixie cup + water + corn starch + stir

Flubber:

Person 1:

30mL water + 2 scoop spatulas of borax + heat (be careful) + stir while being heated

Person 2:

60mL glue NOT IN GRADUATED CYLINDER (measure 60mL water, put in a Dixie cup, mark level with sharpie, empty cup, fill with glue up to mark) + 30mL water + food coloring + stir

yay! finished the polls today, remember flamibility and reactivity are chemical properties not physical.

we also talked about the molecular structure of solids, liguids and gases. Solids are tightly packed and vibrate slowly, but not all solids are egually. There are amorphous, which are tightly packed but are disorganized, while crystalline are very organized and tightly packed.

Liguids are further apart then in solids and they slide and glide passed each other.

They have no definite shape, but they have a definite volume

Gases have no definite volume or shape!

They are very loosely packed and are shooting all over the place

and that's it for today!