Only a Few Grams of This Element Exist—and Scientists Have Used It to Break the Rules of ...
More than 75 years after its initial discovery, scientists have created an organometallic molecule containing the ...
BBC3 年
What does the periodic table tell us about the elements?
The table shows the melting points of five alkali metals. Use this information to describe how melting point changes in group 1.
BBC12 年
What does the periodic table tell us about the elements?
Damp litmus paper is bleached white when it is placed in chlorine. If damp-blue litmus paper is used, the paper turns red then white.
C&EN10 个月
Periodic Table Educational Resources for Ages 15-18
By comparing colors across samples, we might be able to determine the real culprit. The green chemistry principle of atom economy ... As part of the ChemClub's 10 th Anniversary, we asked clubs to ...