Magic show

For our magic show, me and Mateja did two tricks. I was in charge of a experiment where milk turns into different colors. To see the trick click the link below
http://www.youtube.com/watch?v=Hr6dZ6aWpF4. Mateja did a trick called instant snow. To see the experiment, search the link below :
http://www.youtube.com/watch?v=iz2Pr7ZS76Y
Everything went nice except we wasted a lot of time emptying and cleaning the plate. The kids were excited for both for mine because it was nice and for Matejas because it was hard to believe, even I was amazed what happened.

  For my color milk this is why it does it: Milk has quiet big amount of surface tension which means it is pretty strong. That's why when we add food color it doesn't do anything. But, when we add soap it pushes the food color and milk to the edge.


You can do this at home.
WARNING: Do not drink the milk after the food color is added.

Simulation

 For the solid, liquid gas part, when you add heat to all molecules they start to spread and move fast. When we take away heat, the molecules slow down.  They are all the same because they all do  he same thing. They are different colors. At room temperature neon is moving kind of fast. At 25K the molecules start to connect and slow down.
 For the phase change, the higher the pressure the faster the molecules move and spread. When we add pressure the molecules squeeze together to survive. When the pressure is too high the molecules expand and break the top and fly around.

BacillaFilla - A Bacteria That Glues Concrete Walls

This article I found on Dogo news and it was posted by Meera Dolasia two days ago. This article is about a bacteria which a group of students in UK's New Castle University  created for gluing concrete together  or filling in holes in concrete. This bacteria was  created by genetic engineering   using an ordinary bacteria from soil. The name of this bacteria is BacillaFilla and it fills up the concrete cracks in the following way:

1. bacterias enter the hole and they cluster together
2. a hardening fiber is produced by this bacteria  and
3. a special kind of glue is created and it sticks everything together

This bacteria is still not on sale and that's a pity, because natural disasters are happening often and they destroy the concrete structures. For the time being, this ruined buildings must be completely thorn down or repaired with a new concrete whose production contaminates the environment. Imagine how easy would be just to put some bacteria in cracks and holes and wait for this wonder creatures to do all the repair work!

My mixture

In science class we had an assignment to create a mixture and to identify it. I made a mixture called Apfel Spritzer. This is a mixture of  apple juice and fizzy water. My mixture was homogeneous mixture and it was a solution. At the end I even got to share it with my classmates and they enjoyed it, they even wanted more but the teacher didn't allow. This assignment  was fun and I enjoyed tasting all these delicious mixtures. 

Notes on mixture videos

Mixtures are two ingredients  mixed together. In the videos that I watched, I learned  that homogeneous mixture is a mixture in which it seems that there is only one material even though it's a mixture of two or more components. There are 3 types of homogeneous mixtures, there are  Suspension, Colloid and Solution. Suspension is a mixture in which particles do not dissolve and different layers are visible. Colloid Mixture is a mixture in which particles move all the time. Solutions are mixtures which are made when one component (solvent) melts or dissolves the other components (solute).   I also learned that another type of mixture is heterogeneous and it's a mixture where you can see separate materials. 

glogster reflection

During October, we had to create a glog about glaciers/desalination. While I was doing it, everything went fine. I was  on time except,  I got sick while the presentation day . When I  came back to school, I realized we had to put our glog on blog which I had no idea how to do. So, that also took some time because we didn't have time-management for me and my teacher to help me put my glog on the blog.  I presented yesterday. While I created my blog I learned that we` should stop global warming in order to help  important glaciers to stay oh Earth.

Reflection on water molecuels

During the last lesson we did an experiment in which we put food color into a cup of hot, room temperature and cold water. The color in the hot water dissolved the fastest and in the cold water it was slowest Temperature means how hot something is. Molecules can be moving in different directions and different speed. Hot water moves the fastest and move around very quickly. Room temperature molecules are moving with medium speed but they are connected. Cold water molecules are moving slow and they are connected very tightly.

To sum it up, molecules in water have two hydrogen and one oxygen.