Nuclear Chemistry

Collision

________ causes the nucleus to expand.

Large nuclei

________ tend to need more neutrons than p.

Gravity

________- all objects with mass are attracted, weakest, very long distances.

Stars

________ ran out of fuel and exploded ejecting outer layers= supernova.

Implosion type

________: consisted of weapons- grade plutonium.

Band of Stability

________- shows n /p ratio for all nuclei.

Gamma

________- ⁰₀Ɣ stopped by thick concrete or lead.

Fusion

________ occurs when two atoms slam together to form a heavier atom, like when two hydrogen atoms ________ to form one helium atom.

slow neutron

What is bombarded? Answer with a single words or term.

particle accelerator

A(n) ________ was used to smash U- 238 with fast neutrons (12, 000 mps) to create U- 239.

Repulsion

Electric force becomes dominant. ________ spits the nucleus.

Alpha bombardment

________ is on the left side (just like electron capture)

Greater force

What is SNF because of the small distance? Answer with a single words or term.

Electron Capture

________- ⁰₋₁e (but on left side of arrow)

Total number of nucleons

________ is too high: too large nucleus (alpha decay)

Alpha

Types of Decay: ________- ⁴₂He stopped by skin or paper.

SNF

________ helps sustain nuclear binding energy.

CERN

________- council european research nuclear.

Fission

________- a large nucleus splits into two medium- sized nuclei releasing lots of heat.

uranium

The ________ is processed into small ceramic pellets and stacked together into sealed metal tubes called fuel rods.