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There are 108 videos in this category and 57 videos in 17 subcategories.
Category Videos
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Not Right For WatchKnowLearn
Ages: 11 - 18
764 Views:
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This two minute video is about this element and what it does and its uses.
atomic number:9
atomic symbol: F
Flourine is the most reactive element and reacts with hydrogen to make hydrogen flouride, which will dissolve human flesh.
July 13, 2011 at 06:55 PM
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Not Right For WatchKnowLearn
Ages: 5 - 18
756 Views:
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atomic number:29
This three minute video explains what Cooper is and how it reacts to various stimuli. Its atomic symbol: Cu. It is unusual because it is colored and copper compounds are not very reactive. This is a good overview.
July 13, 2011 at 02:45 PM
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Not Right For WatchKnowLearn
Ages: 5 - 18
746 Views:
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This 2:30 long video is about the properties and uses of Arsenic. Arsenic was more common in olden times as a pigment for green wallpaper Arsenic is poisonous to most life forms, but still has uses.
July 13, 2011 at 12:35 AM
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Not Right For WatchKnowLearn
Ages: 6 - 18
743 Views:
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This two minute video provides insights into what selenium is and what it does from being in dandruff shampoo to conducting electricity. AN: 34 AS: Se This element that is similar to sulfur.
July 13, 2011 at 12:45 AM
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Not Right For WatchKnowLearn
Ages: 7 - 18
738 Views:
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This two minute video reviews what bromine is and how it is used.AN: 35
AS: Br
It is a very aggresive red liquid with a horrible smell that is commonly used to retard fires.
July 13, 2011 at 12:50 AM
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Not Right For WatchKnowLearn
Ages: 5 - 18
736 Views:
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This six minute lecture explains the attributes of oxygen and its two forms. A lot of good information is provided about this element that is often taken for granted. For example it is both o2 and o3 and can be in the form of liquid, is very very rea...ctive, keeps fires burning, and if put in an oxygen rich atmosphere, a fire can reignite.
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July 17, 2011 at 09:47 AM
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Not Right For WatchKnowLearn
Ages: 5 - 18
735 Views:
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This 2:35 long video explains the uses of phosphorus in its various types from matches to weapons of war. Phosperous is very reactive, especially white phosperous that burns rapidly and it is in part of every human body. Excellent. Warning that this ...element is very dangerous when exposed to the air.
atomic number: 15
atomic symbol: P
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July 13, 2011 at 09:22 AM
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Not Right For WatchKnowLearn
Ages: 7 - 18
734 Views:
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This three minute video is about Zinc and its uses and qualities. A very good overview.
July 12, 2011 at 08:56 PM
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Not Right For WatchKnowLearn
Ages: 6 - 18
733 Views:
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This 3:35 long video explains how gold is used and why it is valuable. It is an excellent overview.
SYMBOL:
Au
ATOMIC NUMBER:
79
July 16, 2011 at 09:33 PM
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Not Right For WatchKnowLearn
Ages: 8 - 18
723 Views:
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This three minute video explains the many uses of silicon,atomic number: 14 symbol: Si. found in sand. A good video to make this element become alive for students.
July 13, 2011 at 02:36 PM
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