Online testing - acids & bases and radiation

For acids and bases, use the universal indicator test, from this link. Be sure to make your predictions first.

And here is a TED-Ed on the strengths and weaknesses of acids and bases.

Click here for the Online radiation quiz from Hanford and OMSI. Be sure to write down the numbers that apply to you.

There are lots of Ted Talks on Nuclear topics... check them out. 

People often ask about Chernobyl and here is a TEDtalk about the people who refused to relocate. There is also a lot of information here at National Geographic.