Lab Report

Guiding Question:How does concentration of a solution affect the rate of the reaction?
Hypothesis: I think that every substance is different.
Exploration:aluminium foil, water, spoon, CuSO4, googles
Variables:The amount of water.
Manipulated: The color in each glass.
Response:I think that the four aluminium foils are going to have a other result because in each glass in a different sum of Copper sulfate
Concept Application: Next time me and my group could put sugar in the glasses with Copper sulfate and water then it would be faster.

Tarantula Nebula Glows With X-Rays and Infrared Light

The above story is reprinted from materials provided by NASA.

Date Article Written: Nov.13, 2011

The region in which stars are made, 30 Doradus, is one of the largest located close to the Milky Way, in the neighboring galaxy Large Magellanic Cloud. About 2,400 giant stars in the center of 30 Doradus, also known as the Tarantula Nebula, are making intense radiation and powerful winds while they blow off matter.

A nebula, which comes from the Latin word for mist or cloud, is an interstellar cloud of dust, hydrogen, helium, and other gases. Many nebulae or stars form from the gravitational collapse of gas in the interstellar medium. As the material collapses, massive stars form in the center, and their ultraviolet radiation ionizes the surrounding gas, making it visible at optical wavelengths.

Astronomy – the oldest of the natural sciences. Astronomy is the only science in which you cannot perform experiments directly ; you can’t weigh, touch or smell your subject matter… You can only observe the radiation ( visible light, radio, infra-red) which comes to earth.

What fascinates us is how there's so many unanswered questions. The Universe is enormous, and literally anything is possible if we keep exploring space. There's just so much to learn about the Universe than there is to learn about anything else.

Site:http://www.sciencedaily.com/releases/2011/11/111113232115.htm

Magnetic Fields Set Stage for Birth of New Stars

The above story is reprinted from  materials provided by Max Planck Institute for Astronomy.
Date Article Written: Nov. 16, 2011

Researchers have measured the alignment of magnetic fields in big clouds of gas and dust in a far away galaxy. Their findings show that such magnetic fields play an important role in directing matter to form thicker clouds, in that way preparing the environment for the birth of new stars. This work is published in the journal Nature.

Stars and planets are born when giant clouds of interstellar gas and dust collapse. Astronomers know a lot about these molecular clouds: They consist mainly of hydrogen molecules -- unusual in space where conditions are rarely right for hydrogen atoms to bond together into molecules. We have all seen the resulting stellar nurseries in beautiful astronomical images: Colorful nebulae, lit by the bright young stars they have made.

We all like to look at the night sky and imagine what it might be like out there. Astronomers have powerful telescopes and the knowledge to bring these mysteries closer to us. It is fascinating to know that behind these beautiful images lies a whole history of important events that may sound fantastic and too abstract but are actually influencing our little planet as well. Space exploration seems to take so much work and give so little results but in the big picture we owe it a lot and we shouldn't take it for granted.

Site:http://www.sciencedaily.com/releases/2011/11/111116132119.htm

World's Lightest Material Is a Metal 100 Times Lighter Than Styrofoam

Reprinted from materials provided by University of California-Irvine

 Date Article Written: Nov. 17, 2011

 Scientists have created  the world’s lightest solid material, a metal which can be put on top of a dandelion without even crushing its seeds.

The research, published in the latest edition of the journal Science, was carried out at the University of California, and the Irvine and HRL laboratories. The engineers say the material’s strength derives from the ordered nature of its lattice design.

The substance is made of tiny hollow metallic tubes – the walls of which are 1,000 times thinner than those of a human hair – arranged into a criss-crossing diagonal pattern with small open spaces between them. The researchers say the material, which consists of 99.99 per cent air, is 100 times lighter than Styrofoam and has ‘extraordinarily high energy absorption’ properties.

Honestly, this article caught my eye because of the picture of a flower with the material on top of it. It's interesting how scientists always compare high technology innovations with something ordinary. Jokes aside, I think it's amazing what the scientists come up with nowadays. Our everyday life is full of things that took a lot of time and research to be made, such as Teflon, Lycra etc. and we should feel privileged to be able to witness science in the making. Whether it will be feasible or useful, time will tell. 

Site:http://www.sciencedaily.com/releases/2011/11/111117154643.htm

Chemical Reactions

1.http://www.youtube.com/watch?v=hVK9Om4wzBM
In this video you see what happend when you put Bromine  into alcohol.If you shake it a little bit and then it turns into a yellow substance.After waiting some seconds you shake it again and then below its like burning and the whole alcohol is red and it starts bubbling.


2. http://www.youtube.com/watch?v=8ypUVpwgcAA&feature=related
When you put Lithium into water  it starts burning and quickly moving on the top of the water, but just for a few seconds.

3.http://www.youtube.com/watch?v=896vJj6eWYw&feature=related
In this video you can see waht happend when you put Cesium in water. When they put the Cesium in the water it immediately explode.

4.http://www.youtube.com/watch?v=qRmNPKVEGeQ&NR=1
In this video you see what is going to happen when you put Potassium in water. When the piece of Potasium touches the water it starts burning and it is quickly moving around, for a few seconds.

5. http://www.youtube.com/watch?v=vJslbQiYrYY&NR=1
The next video shows Sodium and Potassium in water, I found this video really cool. When they put the Sodium in the water it starts flamming.A time its just flamming and then the water injected everywhere.


6.http://www.youtube.com/watch?v=5n7kBkBcXgo&NR=1
The next video shows how the reaction is when you put the Aluminium foil in the Works.At the beginnig its really slow and nothing happend,but then it start overflowing.


7.http://www.youtube.com/watch?v=zrNA8-eipGE&feature=related
The last video shows a lot of things first they hooked light in the water.Then they put food dye in the water and then they stired the food dye.After that they put salt crystals and mineral turpetine in. I really liked that one because there was something really cool in there after they put the mineral turpetine in it.

Where's the Evidence?

Guiding Question:  What are some signs that a chemical reaction has taken place? 


Hypothesis: I think every substance will have a other reaction. Some will maybe change the color, other will be cold or hot.


List of the Materials used: 
-Baking soda 
-sugar 
-copper sulfate
-sodium carbonate
-zinc
-calcium chloride
-aluminium foil
-starch and iodine

Analysis of your results: I thought that some of them are going to explode, change color or over float.Some of them were bubbling a time and then it stops. One of them over float and after that nothing happened again. And several changed color but not instantly but after a time.

Aluminium

http://prezi.com/bhnddtt9irzo/edit/#0

Prezi

http://prezi.com/bhnddtt9irzo/aluminium/

Current event Pesticides residue in fruits and vegetables

The 2011 is International year of chemistry. Very important part of chemistry is analytical chemistry. We use this part of science for determination of pesticide residues in food and environment. Pesticides are used to control pests that destroy the crops, but these pesticides are toxic to human life and store in fats of human body if an individual consume fruits that contain pesticide on its surface.

The new study have revealed that fruits that have peel have more chances of containing pesticides and if the person consume it then these chemical toxins stored in fats and can cause harmful effects.

So, we must be very careful when we eat a fruits like apple, peach, pear, apricot and other fruits which are eaten along with the peel. And peeling that apple might not make sense because many of its nutrients are in the skin, he said. In addition, pesticides can enter a fruit through the plant’s roots.

“They put out this study, and it only serves to scare people away from the exact food they should be eating,” said one director.

But, it is possible to eat healthy fruits. From pesticides we can protect if we eat the organic agricultural products.

The organic fruit and vegetables grow without pesticide and represent the food of future.