Transcript Isotopes - poffenberger

Isotope
• Definition: form of an element with the same
atomic number
• What two parts of an atom remains the same if the
atomic number does not change?
– Protons
– Electrons
• What is the only thing left that changes?
– Neutrons
A look at Hydrogen
What is happening in the Nucleus?
• Think about a balloon that is continuously
filled with air.
• What will happen if you never stop filling it
with air.
• It will finally explode…the nucleus works the
same way.
Isotopes of Carbon and Hydrogen
The explosion that results is radiation
• Radiation is the release of 3 types of particles
– Alpha Particles
• Positivly charges and massive, these are pieces of the
nucleus
– Beta Particles
• Negativly charged and have a very light mass, these
were discovered to be the electrons
– Gamma Particles
• Neutrally charged and no mass, these are pure energy
The Strength of the Particles
Checkpoint
• What is the strongest type
of particle
– Gamma
• How do you know it is the
strongest?
– Able to travel through paper
and aluminum
Results of Radiation
• Radiation can be very
harmful to us.
– Chernobyl
– Sun burns
• UVA, UVB
• Discover some good uses of
radiation.
Different Uses of Radiation
• Working with the student in your row..
– Read the supplied article
– Be able to tell the class what radiation is being
used for.
– Why is this use of radiation important?
Now let’s make some isotopes
• Fill out the following chart at your seat
Atomic
#
C-12
C-13
C-14
Atomic
Mass
# of p
# of n
# of e
Draw the Bohr Diagrams for each atom
in the table.
Make the atom using the supplies at
your seat.
Label the parts of the atom as follows:
protons = +
neutrons = 0
electrons = -