Chem Ch 20 Review

What are nuclear bombardment reactions?

• spontaneous splitting of unstable nuclei

• nonspontaneous nuclear reactions that are forced to occur

• the slow emission of particles to change an element from one form to another

• an exchanging of electrons between multiple atoms

Which of the following are very high energy emissions in the form of electromagnetic waves that have no mass and can permeate most things.

• Alpha decay

• Beta decay

• positron emission

• gamma rays

Using this graph, which nuclide is the most stable?

• Cu-63

• Sn-116

• Li-6

• Ne-20

Is Al-27 more likely to undergo nuclear fission or fusion

• fission

• fusion

• it's impossible to know

Is Nd-150 more likely to go through fission or fusion

• fission

• fusion

• impossible to know

What is the purpose of using nuclear fission in a nuclear reactor?

• the energy from the reaction sends out particles that fire at a turbine and turn it

• the nuclear explosion is harnessed like a combustion engine and uses the pressure to move pistons which turn a turbine

• the high-intensity gamma radiation acts on solar energy cells to convert the Electromagnetic waves into energy

• The thermal energy from the reaction is used to turn water into steam which is pressurized and sent to turn a turbine

Which of the following scientists did NOT receive a Nobel Prize in Physics for the early exploration of radiation?

• Lise Meitner

• Marie Curie

• Henri Becquerel

• Otto Hahn

The difference between the mass of an atom and the total mass of its individual parts if they were separated is called?

• fission energy

• mass number

• mass defect

• binding energy

The energy released in a nuclear reaction comes from

• the emission of gamma rays

• the mass defect turning directly into pure energy

• the fast splitting of the atom causing all the particles around it to vibrate faster causing increased thermal energy

• The fabric of space-time sending gravitational shockwaves from the point that the atom splits, similar to how a rock dropped in water creates waves

What is the number of neutrons in the isotope Tungsten-189? (W-189)

• 189

• 74

• 183.8

• 115