Using Webelements

What I had actually meant was for you to use the webelements periodic table to identify all of the elements which are radioactive or synthetic (in which case they are radioactive). With the information that is provided from that site (discoverer or developer and the year in which this occurred), create a timeline of those elements - paying particular attention to whether these cluster around a certain period or years, if there were individuals who participated in more than one discovery/development or if it all appears to be pretty random. When you get this list finished, create a word document with the timeline and turn it in to me. I'll be curious to see what you discover.

Timeline in Radioactive Substances

So far, this is pretty good work. I need to remind you that you should be keeping a record of the websites you've used for your responses. You will need to provide a list of those used so far and keep up with them for the remainder of this project.

Your next assignment is to construct list of radioactive elements, the person who discovered it, and the dates of their discovery. The best source would probably be www.webelements.com.

Further Questions

OK - you've done some preliminary work on the questions that were assigned. Based on your responses, here are some further questions for you to investigate and answer. Your original responses are below.


hey this is taylor and im doing the article About a New Metal, Gallium and i think this might be about the discovery of gallium and its properties and what not and it was discovered in france in 1875 during the industrial revolution so there were a lot of discoveries and inventions happening everywhere also the french revolution had just taken place and the constitution had recently been written and as far as the dude that wrote it goes his name was lecoq de boisbaudran what a name right? well apparrently he also discovered a few other elements and made contributions in the field of specroscopy and experimented with rare earth metals so i guess he just liked to mess with metals and stuff
January 28, 2008 12:30 PM

hey this is taylor and the article: A radioactive substance emitted from thorium compounds and i think it might b about radioactivity in thorium compounds and this was in montreal during the early 1900's so the wright brothers began experimenting with aviation and the industrial revolution had just started to decline and it was right before the first world war rutherford apparently was pretty smart he went to like 3 colleges so i guess he just enjoyed chemistry and his work greatly influenced nuclear engeneering so i guess he liked taht too
January 29, 2008 12:31 PM

These questions are about your second article -

1. What else did Rutherford do in chemistry/physics? Was he responsible for discovering or developing anything else? What particle did this particular paper refer to?
2. How many radioactive substances were known by the time Rutherford was working with thorium?