4.2

Question 1

radioactive decay

what happens to the nucleus, emits?

Answer 1

unstable nucleus breaks down and releases high energy radiation

Question 2

Alpha particle

mass and protons from original

Answer 2

4 less mass than original, 2 less protons than original.

Question 3

beta particle

proton

Answer 3

one more proton than original

Question 4

how are beta particles emitted?

Answer 4

neutron breaks down into electron and proton

Question 5

how are positrons emitted?

Answer 5

a proton breaks into a positron and electron

Question 6

positron

atomic number

Answer 6

atomic number decreases by one

Question 7

gamma radiation
(how is it indicated?)
(what is emitted? and from where)
(mass#, atomic #)

Answer 7

letter “m” following mass number
mass # and atomic # stays the same
energy from nucleus

Question 8

radioactive isotopes

how is it produced? and through what process?

Answer 8

bombarding a stable nucleus with a particle to create an unstable nucleus through transmutation

Question 9

transmutation equation

Answer 9

Stable nucleus+ particle= unstable nucleus +particle