7A Middle School Science
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7A Middle School Science
A collection of articles and videos pulled together to help create science literacy at the middle school level.
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Two New Elements Added To Periodic Table

Two New Elements Added To Periodic Table | 7A Middle School Science | Scoop.it

Here are the official names of the two newest elements to join the PToE.  What do you think?

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How LEDs Got Their Shine Back - ScienceNOW

How LEDs Got Their Shine Back - ScienceNOW | 7A Middle School Science | Scoop.it

What properties of metalloids make it possible for LEDs to work? Name one of these elements.

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Calvin L.'s comment, May 10, 2012 4:41 PM
This is a cool article. I knew that LEDs were very efficient but i didn't know that there was a "droop" when more electricity was used

the article says...
Gallium nitride has semi-conductive properties that are used in green and blue LED lights but as the electricity running through the LED increases the diode's gallium nitride layer generates its own electric field thus making it harder for the the positive and negative charges from the electrodes to combine and give off light making LEDs less efficient.
I also thought it was cool that the scientists (for the most part) to fix this problem. It just goes to show that science is continuing to make things more energy efficient to help the environment (and our electric bills.)
kobe24's comment, May 11, 2012 6:54 PM
i think it was awesome to me i liked the article this is intristing :)
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Two new elements join the periodic table – but what should we call them?

Two new elements join the periodic table – but what should we call them? | 7A Middle School Science | Scoop.it

What does it mean that two new elements were discovered? How do we know where they will go on the PToE?

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Althesalesguy's comment, May 7, 2012 3:56 PM
i have read another article on another website called 80beats.com. the website said the elements are called 114 and 116.
Fendawg's comment, May 10, 2012 9:28 AM
That is the correct atomic number for those elements, however, what would their names be? For example we call atomic number 1 "hydrogen", what are these new elements to be called?
S.Gravy's comment, May 17, 2012 4:25 PM
I can't wait to see what these elements will be able to do. Maybe they will help create a new eco- friendly alternative to gasoline for cars or maybe they will make a really destructive weapon with it. I would hope for the gasoline alternative. :)
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NOVA | Elements in the Ocean

NOVA | Elements in the Ocean | 7A Middle School Science | Scoop.it

Listen to this podcast by Catherine Jeandel about the research she is doing on the oceans. 

 

Why should we care about the chemical composition of the ocean?

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kobe24's comment, May 17, 2012 3:49 PM
i think it was awesome to see element in the oceans water
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Supermoon makes photographers go crazy

Supermoon makes photographers go crazy | 7A Middle School Science | Scoop.it

Did you see the moon this weekend? What is it about how the Moon orbits around the Earth that makes this one over the weekend a "supermoon"?

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Fendawg's comment, May 7, 2012 10:10 AM
I saw this and I didn't think it was as big as some others did. But I know that the Moon orbits not in a circle...so maybe that has something to do with why it looked bigger.
Ally S.wag's comment, May 7, 2012 7:38 PM
i didn't see the moon this weekend but i though it was pretty cool, and did some research on wiki. A super moon is considered a full moon or half moon and they say its the closest approach the Moon makes to the Earth on its elliptical orbi so thats why it seems so big.