|
|
Post by 1dave on Dec 7, 2020 12:44:52 GMT -5
Elements can be divided into metals and nonmetals and it is important to know whether a particular element is a metal or nonmetal. Metals (like copper and aluminium) are good conductors of heat and electricity, while nonmetals (such as phosphorus and sulfur) are insulators.  sonorous metals - capable of producing a deep or ringing sound. Of 92 fairly stable elements, most are metals. Only 10 are Non-Metals, well 16 IF you count the non-reactive noble gases.
 A closer look allows 7 borderline elements - in orange.  |
|
|
|
Post by 1dave on Dec 7, 2020 12:51:57 GMT -5
Scientists are still arguing.  |
|
|
|
Post by opalpyrexia on Dec 7, 2020 14:33:07 GMT -5
From the day I entered my first chemistry class and saw the huge periodic table in the front of the classroom, I've been fascinated by this thing of beauty and order (not referring the colors!). I have one hanging in my workshop. On very rare occasions, usually if she's doing a puzzle or encounters symbols while reading, my wife will ask "What symbol is this for?" or "What's the symbol for this element?" That earns me a smile and sometimes "You're such a nerd!" in a loving way. For periodic table lovers, you might enjoy a short poem that was published in Scientific American in November: The Noble Gases |
|
|
|
Post by mohs on Dec 7, 2020 15:15:09 GMT -5
like that poem Gary
especially this
causal beginnings is Organisism
for an uno momento
sure we've all heard this melodic period piece
Harvard aside
|
|
|
|
Post by opalpyrexia on Dec 7, 2020 17:28:16 GMT -5
like that poem Gary especially this Thanks for the video. I really enjoyed it! And those are my favorite lines, too.
|
|
