Check out two or three elements and see what cool things you can learn about the elements. Then, share here what you found. Also, please share a little about how you liked watching the videos.
The Orange Shagamuffins
15 years ago
Tuesday, December 16, 2008
Extra Credit - Video Periodic Table of the Elements
Check out two or three elements and see what cool things you can learn about the elements. Then, share here what you found. Also, please share a little about how you liked watching the videos.
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Science Extra Credit
Chlorine
• Atomic number=17
• Symbol=Cl
• Found a lot in sea water
• Found in common salt like Sodium Chloride
• The Gas itself is greenish
• Very toxic and reactive
• Toxic to people and environment
• Used in the plastic industry
• Used to make covering on electrical wires
• Used for bleaching
I liked watching this video; it gave me a lot of clear, useful information. My only criticism is that I could not understand what the man with the crazy hair was saying sometimes.
Helium
• Atomic number=2
• Symbol=He
• Very small gas
• Very light
• Most un reactive of the elements
• Weighs 4 times as much as a Hydrogen atom
• Found as a component of natural gases particularly in the
United States because it is formed by the radioactive decay of minerals under ground and these form helium, which is trapped with the natural gas.
• If you breathe in helium you then start speaking in a very high pitched, squeaky voice
• The speed of sound is much greater in helium than in ordinary gases
• Only liquefies at very low temperatures
• Liquid Helium is used for magnets when you need very powerful magnets
This video was my favorite because of the experiments they showed. I liked how they showed how helium can make your voice squeaky and when they lit it on fire. Also, I thought it was very cool how the material of the balloon shriveled up when they cooled the balloon with liquid nitrogen.
Carbon
• Atomic number=6
• Symbol=C
• Very important element
• Carbon is surrounding us everywhere
• We use carbon in a form of fuels in our every-day life
• Very common element
• You can arrange them as footballs and long tubes (nana tubes)
• Carbon comes as graphite or diamonds
This video was very straightforward and gave you a lot of facts. I noticed that they really wanted to emphasize how important the element was. Also, I liked how they related the element to our daily lives. For example: we use carbon in a form of fuels to get to work or school every day. And how they related carbon to engagement rings.
Neon
·Symbol: Ne
·Atomic number: 10
·It is used for signs that light up
·Inert gas
·It is usually red colored
·It is in a glass tube
Sodium
·Symbol: Na
·Atomic number: 11
·It is a reactive metal
·Melting point: about ninety six degrees
·If you drop it into water it reacts explosively and looks like a mini firecracker
·Dangerous
Magnesium
·Symbol: Mg
·Atomic number: 12
·Light metal
·Used in wheels for cars and the body of pencil sharpeners
·When it is near a flame it sparks and burns
I liked using the videos because you could pause it whenever you wanted to. Also you could choose what you were watching.
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