I did not really notice which element was not presented but I think it was Potassium or H2o, but I am not too sure about that. In the videos I often saw a reaction that had to do with a Balloon which was quite interesting. The three elements I learned about.
1. Helium, if you would put it into a balloon and then try to burn it; it only pops. The Scientists say that if we are going to was Helium just like that then we soon in the future won't have anything anymore.
2. Sodium, is very dangerous, you should not use it with out someone watching you, if you cut some sodium off and put it into water, then it starts burning and flaming.
3. Carbon is an extraordinary important element, it is also use it weigh other elements. It is a very nice and soft black powder.
Wednesday, September 29, 2010
Friday, September 10, 2010
Chemical Party Reflection
In my opinion, i think the video was pretty funny because
1. The neon + Hydrogen = no attraction ...
but carbon + hydrogen = Attraction!
and also other(4) hydrogens can attract!
2. Sodium Chloride + Electricity = element separation.
3. Water + potassium = at first ??? after; Explosive Reaction!!!
If you want to watch that video than click on this link;
http://www.youtube.com/watch?v=teogpbA5ZoM&feature=player_embedded#!
1. The neon + Hydrogen = no attraction ...
but carbon + hydrogen = Attraction!
and also other(4) hydrogens can attract!
2. Sodium Chloride + Electricity = element separation.
3. Water + potassium = at first ??? after; Explosive Reaction!!!
If you want to watch that video than click on this link;
http://www.youtube.com/watch?v=teogpbA5ZoM&feature=player_embedded#!
Sunday, September 5, 2010
Octet Rule and Models
What is the Octet rule?
The octet rule is a simple chemical rule of thumb that states that atoms tend to combine in such a way that they each have eight electrons in their valence shells, giving them the same electronic configuration as a noble gas.
For me this means that the "Octet Rule" is just a chemical rule that explains the atoms and the electronic configuration.
http://www.google.com/search?hl=en&defl=en&q=define:Octet+rule&sa=X&ei=coaETOLmHY6ROKTKvdoO&ved=0CBIQkAE
What is a Bohr Diagram?
The Bohr model, devised by Niels Bohr, depicts the atom as a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus—similar in structure to the solar system, but with electrostatic forces providing attraction, rather than gravity.
What I am trying to say is that the nucleus orbits around the solar system but with electrostatic force.
http://en.wikipedia.org/wiki/Bohr_diagram
What is a Lewis Dot Diagram?
The Bohr model gives almost exact results only for a system where two charged points orbit each other at speeds much less than that of light. This not only includes one-electron systems such as the hydrogen atom, singly-ionized helium, doubly ionized lithium, but it includes positronium and Rydberg states of any atom where one electron is far away from everything else.
In my own words this would mean that a Bohr model gives a similar result only for a system where two charged points each other at speeds which are not that fast such as light; and that it shouldn't always include one-electron system such as the hydrogen atom, singly-ionized helium, doubly ionized lithium, but it includes positronium and Rydberg states of any atom where one electron is far away from everything else.
http://www.google.com/search?hl=en&defl=en&q=define:Lewis-dot+diagram&sa=X&ei=G4eETImxNY-mOMmr2MwO&ved=0CBIQkAE
What element is this? How can you decide? Post a comment to my post below and tell me what you think it is?
The octet rule is a simple chemical rule of thumb that states that atoms tend to combine in such a way that they each have eight electrons in their valence shells, giving them the same electronic configuration as a noble gas.
For me this means that the "Octet Rule" is just a chemical rule that explains the atoms and the electronic configuration.
http://www.google.com/search?hl=en&defl=en&q=define:Octet+rule&sa=X&ei=coaETOLmHY6ROKTKvdoO&ved=0CBIQkAE
What is a Bohr Diagram?
The Bohr model, devised by Niels Bohr, depicts the atom as a small, positively charged nucleus surrounded by electrons that travel in circular orbits around the nucleus—similar in structure to the solar system, but with electrostatic forces providing attraction, rather than gravity.
What I am trying to say is that the nucleus orbits around the solar system but with electrostatic force.
http://en.wikipedia.org/wiki/Bohr_diagram
What is a Lewis Dot Diagram?
The Bohr model gives almost exact results only for a system where two charged points orbit each other at speeds much less than that of light. This not only includes one-electron systems such as the hydrogen atom, singly-ionized helium, doubly ionized lithium, but it includes positronium and Rydberg states of any atom where one electron is far away from everything else.
In my own words this would mean that a Bohr model gives a similar result only for a system where two charged points each other at speeds which are not that fast such as light; and that it shouldn't always include one-electron system such as the hydrogen atom, singly-ionized helium, doubly ionized lithium, but it includes positronium and Rydberg states of any atom where one electron is far away from everything else.
http://www.google.com/search?hl=en&defl=en&q=define:Lewis-dot+diagram&sa=X&ei=G4eETImxNY-mOMmr2MwO&ved=0CBIQkAE
What element is this? How can you decide? Post a comment to my post below and tell me what you think it is?
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