The story-line and visualization presented in the comics are designed to support the formal learning outcomes of atomic nuclei and radioactivity. From the definition stage, the resulting development focused on the discussion of nuclear reaction. Furthermore, the design and developing stages involve ...
Radioactivity:The substances that disintegrate by the spontaneous emission of radiations are referred to as radioactive substances. Examples include uranium, radium, polonium, thorium, actinium, etc. The isotopes of nearly all elements of an atomic number higher than 82 are radioactive because in ...
FEMALE STUDENT: The number of protons in each atom of an element. MALE PROFESSOR: Right.Well, early versions of the periodic table had gaps. Missing elements.Every time you have one more proton you have another element,and then — oops — there'd be an atomic number for which there was...
Explain the mechanism of electrical conduction in metals Explain the functioning of breeder reactor. 1. Describe how the nodes are produced in a violin? Explain and illustrate how does short circuiting takes place. Explain, what you understand by "radioactivity". ...
If you know where a certain element sits in the table, and you know a little bit about the properties of the elements above, below, and either side, you can often figure out what the properties of that element will be.How do atoms make molecules and compounds? Atoms are a bit like ...
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He began by rearranging the elements by their atomic mass. He left blank spaces since there was a lot more discovery to be made later down the road. A physicist named Atonie Bequerel was the first to discover radioactivity. Ernest Rutherford was the first to discover alpha, beta, and ...
Megan: But we're almost out of low-background metal. Cueball: What's that?[Close-up on Megan who lifts her hand palm up.] Megan: Modern metal is contaminated by fallout from nuclear testing, and lead also has natural radioactivity that fades over time. Megan: To shield sensitive equipme...
Define isotopes and explain what causes some isotopes to be radioactive and how people may be helped or harmed by radioactivity. Explain how the salinity of water changes in an estuarine environment. What causes the dead zone in the Gulf of Mexico? What type of damage does this cause to the...
Describe the importance of radioactivity in medicine. Give an example of how radioactivity is used to diagnose and treat diseases that affect patients. Radiation is used for cancer therapy. What are the dangers to human beings that this radiation can cause?