p3 Flashcards
what is all matter made up of?
particles
whats the structure of solids
strong forces , fixed and regular arrangements
whats the structure of liquids
weaker forces and irregular arrangements
whats the structure of gases
no force of attraction
what do colliding gas particles do
create pressure
what does increasing the temp of gas do
increase pressure
what is specific latent heat?
energy needed to change state of 1kg mass
formula for specific latent heat
energy = mass x specific latent heat
what does a change of state require
energy
what are isotopes
different forms of the same element
what are alpha particles
helium nuclei
what are beta particles
high speed electrons
what are gamma rays
Em waves
what is half life
time taken for number of radioactive nuclei to halve
what us exposure to radiation called
irradiation
