Chem topic 11

• what parts of an atom does nuclear radiation impact?

  all parts
• nuclear decay is a _ process

  natural
• why does nuclear decay occur?

  atoms are heavy and want to be stable
• alpha decay _ into ___


  splits, two different molecules
• new molecules from alpha decay are...

  alpha particles
• notated lost protons/neutrons/electrons/positrons put the mass _ and the charge _


  on top, on bottom
• isotope notation has the mass # on the _ and the # of protons on the _


  top, bottom
• a half life is...

  half the time it takes for half of an element to degrade into another
• alpha decay is...


  the loss of an alpha particle/helium nucleus
• in alpha decay, the mass # is _, the # of protons is_

  4, 2
• in alpha decay, the mass # and # of protons will be _ from by _


  subtracted, helium
• beta - decay is loss of...

  electrons
• how does beta - decay get rid of electrons?

  turns them into protons
• beta + decay is loss of...

  positron
• what stays the same from beta - decay?

  mass #
• how does beta + decay get rid of a positron?

  converts proton into neutron
• what does beta + decay affect?

  lowers # protons
• what does beta - decay affect?

  raises # protons
• nuclear bombardment is...

  man made
• nuclear bombardment and nuclear _ are the same

  fission
• what types of atoms are in nuclear fission?

  heavy atoms
• nuclear fusion is...

  natural, done in stars
• what types of atoms are involved in nuclear fusion?

  light atoms
• nuclear fusion produces

  heavier atoms
• nuclear fission forms

  lighter atoms
• nuclear fusion products are usually

  not radioactive, very short half life
• nuclear fisson products are usually

  radioactive
• nuclear fusion takes lots of

  heat and pressure
• both fission and fusion produce

  energy
• t and t 1/2 have to be the same

  unit
• _ has to be the same unit as _

  t, t 1/2
• what is the equation for half life calculations?

  nt/n0 = 0.5 (t/t 1/2)
• _ undoes exponents

  log
• _ go in for nt/n0

  percentages