RADIOACTIVITY ☢️

Question 1

Radioactivity

Answer 1

The spontaneous breaking up of unstable nuclei with the émission of 1 or more types of radioactivity

Question 2

Nuclear Reactions

Answer 2

The process that alters the composition, structure , or energy of an atomic nucleus

Question 3

Transmutation

Answer 3

The changing from one element to another

Question 4

Half life

Answer 4

The time taken for half the atoms in a sample of a radioactive isotope to decay

Question 5

Geiger-Muller tube

Answer 5

The instrument used to detect radiation

Question 6

ALPHA🐺

Answer 6

• contains 2 protons and 2 neutrons (same as helium nucleus)
• Have a +2 charge , meaning they will deflect in a magnetic field
• Slowest because of the larger mass
  Least penetrating power (sheet of paper
• Use Americium-241 smoke detectors

Question 7

ALPHA EQUATION🐺

Answer 7

Mass number= - 4
Atomic number= -2
Eg 231
TH =
90

Question 8

BETA🙍‍♂️

Answer 8

Formed when a neutron in an unstable nucleus is changed into a proton and electron
Has -1 charge because it’s 1 electron
Travels faster than alpha particles
can be stopped 5mm sheet of aluminium
Use- Carbon-14 in Carbon-14 dating

Question 9

BETA EQUATION 🙍‍♂️

Answer 9

Mass number= stays the same
Atomic number = +1
Eg 90
Co =
27

Question 10

GAMMA 👾

Answer 10

Electromagnetic wave of radiation
Has no electric or magnetic properties cause it has no charged particles
Can be cancerous when exposed
Fastest and most penetrating power can be stopped by a thick block of lead
Use: Conbalt-60 in radiotherapy

Question 11

GAMMA EQUATION 👾

Answer 11

Both stay the same
Eg 90
Co
27