does anybody knowq any websites that has qustions about half lives (radioactivity)?
Here is a fact sheet. I don't know if it is what you are looking for or not. If you have a question about radioactivity, post it here and I'm sure someone will be able to answer it.
http://web.ead.anl.gov/uranium/faq/uproperties/faq4.cfm
If you are looking for websites specifically dedicated to questions about half-lives and radioactivity, there are a few options you can explore:
1. Physics Stack Exchange (https://physics.stackexchange.com/): This website allows users to ask questions about various topics in physics, including radioactivity and half-lives. Experts and enthusiasts in the field usually provide detailed answers to questions.
2. The Science Education Resource Center at Carleton College (https://serc.carleton.edu/quantskills/teaching_methods/questions/halflives.html): This resource provides a set of questions and exercises specifically focused on understanding half-lives and the concept of radioactive decay.
3. Khan Academy (https://www.khanacademy.org/science/high-school-biology/hs-chemistry/hs-radioactive-decay-and-nuclear/half-life): Khan Academy offers video lessons, practice questions, and quizzes to help learners understand the concept of half-life and its application in radioactivity.
4. Online textbooks or educational websites: Many educational websites and online textbooks cover topics related to radioactivity and half-lives in their science or physics sections. These resources often include practice questions and answers to help learners grasp the concepts.
Remember, if you have a specific question about half-lives or radioactivity, please feel free to ask, and I'll be happy to help explain the answer to you!