Physics – Atomic Structure Keywords – Flashcards
Unlock all answers in this set
Unlock answersquestion
Alpha particle
answer
Made of 2 protons and 2 neutrons
question
Atomic number
answer
The number of protons in an atom
question
Becquerel
answer
An emission of one particle per second from an unstable nucleus
question
Beta particle
answer
A fast moving electron emitted from the nucleus of an atom
question
Contamination
answer
The unwanted presence of radioactive atoms on other materials
question
Electron
answer
A negatively charged particle which orbits the nucleus of an atom
question
Gamma ray
answer
A high energy electromagnetic wave
question
Geiger-Muller tube
answer
A device which detects ionising radiation
question
Half-life
answer
The time taken for the number of nuclei in a radioactive isotope to halve.
question
Ionisation
answer
Ions formed by radiation
question
Irradiation
answer
The process of exposing an object to nuclear radiation
question
Isotope
answer
Same element with different number of neutrons
question
Mass number
answer
The number of neutrons and protons in an atom
question
Neutron
answer
A neutral particle found in the nucleus of an atom
question
Proton
answer
A positively charged particle which is found in the nucleus of an atom
