Determine whether the statements are true or false, and sort them into the appro

ID: 1519735 • Letter: D

Question

Determine whether the statements are true or false, and sort them into the appropriate bins.

a.) chain reactions tend to fizzle out.

b.)chain reactions are more likely to occur in smaller chunks of Uranium than in larger chunks.

c.)The energy released by fission of one Uranium nuclues is enormous compared to the burning of an equivalent mass of gasoline

d.) A supercritical mass is one in which the chain reaction builds up explosively.

e.)critical mass is the minimum amount of substance for which each fission event causes an average of one additional fission event

f) It is rear for chain reactions to spontanouesly occur in natural Uranium deposits

g.)The more prevalent isotope of Uranium,U-238 does not typically undergo fission when it absorbs neutrons

f.) The combining of atomic nuclie into a larger nucleus is called nuclear fission

( a )

chain reactions tend to fizzle out- Flase

Beacuse, the chain reactions liberates energies exponentially increasing rates, not fizzle out

( b )

chain reactions are more likely to occur in smaller chunks of Uranium than in larger chunks.- false

If we used small chunks, the ejected neutron travel smaller average distances and propably esacpe from surface, before found another nucleus.

( c )

The energy released by fission of one Uranium nuclues is enormous compared to the burning of an equivalent mass of gasoline - True

( d )A supercritical mass is one in which the chain reaction builds up explosively. - True

( e )

critical mass is the minimum amount of substance for which each fission event causes an average of one additional fission event - True

( f )It is rear for chain reactions to spontanouesly occur in natural Uranium deposits - Flase

( g )

The more prevalent isotope of Uranium,U-238 does not typically undergo fission when it absorbs neutrons- True

thus the enriched uranium U -235 is used in nuclear fission reactions

( f )

The combining of atomic nuclie into a larger nucleus is called nuclear fission - False

Becasuse, this is called nuclear fusion, not fission.

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