Nuclear Chemistry Flashcards
What is the charge of the nucleus
Positive
How are atoms neutral
The number of protons = the number of electrons
+1 = -1
Proton Electron
Define isotopes
Isotopes are atoms of the same element with the same atomic number but a different mass number. i.e a different number of neutrons
What are the charges of a proton, neutron and electron
Proton- +1
Neutron- 0
Electron- -1
What are the three types of radiation
Alpha, Beta, Gama
What can be used to stop the radiation in an alpha particle
Paper
What can be used to stop the radiation in a beta particle
Aluminium sheet
What is used to stop the radiation in a Gama particle
Lead or concrete
What is meant by half life
Half life is the time taken for the activity or mass of a radioisotope to half
What is Kevlar
Kevlar is a very strong fibre but is lighter than any other material with the same strength
How is Kevlar made
Kevlar is made by condensation polymerisation
What is Kevlar used in
Bullet proof vests
What is a novel material
A new material
