Chem - Nuclear

Question 1

Nuclear Reactions

Answer 1

Atoms of an element convert to atoms of a different element by expulsion or absorption of protons and neutrons

Question 2

Nuclide

Answer 2

A nucleaus with a particular composition; designated by mass number (A)

Question 3

Nucleon

Answer 3

Collective term for protons and neutrons, a particle in the nucleus

Question 4

Radioactivity

Answer 4

Spontaneous disintigration of a nucleus by emmision of radiation

Question 5

Alpha particle

Answer 5

Bundle of 2 neutrons and 2 protons; identical to a helium-4 nuclei; 4/2

Question 6

Beta particles

Answer 6

High speed electrons; 0/-1

Question 7

Gamma rays

Answer 7

Very high energy photons; not particles

Question 8

Daughter nuclide

Answer 8

Lower energy nuclide remaining after a nuclide decays

Question 9

Alpha decay

Answer 9

Loss of an alpha particle (4/2) from the nucleus; A decreases by 4, Z decreases by 2

Question 10

Beta decay

Answer 10

A neutron is converted to a proton that remains in the nucleus and a B^- particle (0/-1) is expelled; A remains the same, Z increases by 1

Question 11

Positron emission

Answer 11

A proton is converted into a neutron and a positron (B⁺ 0/1) is expelled; A remains the same, Z decreases by 1

Question 12

Electron Capture

Answer 12

The nucleus draws in an electron (0/-1) from a low atomic energy level and converts a proton into a neutron; A remains the same, Z decreases by 1

Question 13

Positron

Answer 13

Antiparticle of an electron; 0/1

Question 14

Gamma Emission

Answer 14

Releases excess energy by radiation of a high energy gamma photon; no change in A or Z

Question 15

Neutron rich atoms undergo

Answer 15

Beta decay, neutron converted into proton

Question 16

Proton rich atoms undergo

Answer 16

Positron emission, proton converted into neutron

Question 17

Atoms with heavy nuclides undergo

Answer 17

Alpha decay, removes massby emitting protons and neutrons