Download 7.P.2A.1 GT Notes

Energy Transfer & Conservation
Name_____________________________________________
7.P.2A.1 Develop and use simple atomic models to illustrate the components of
elements (including the relative position and charge of protons, neutrons, and
electrons).
1. Name the subatomic particles atoms are made of that affect the properties of an atom.
Protons, Neutrons, Electrons
Atoms
2. What is an atom? Smallest part of an element that has the chemical properties of
the element; too small to be seen with a compound microscope
3. Atoms have mass and take up space (volume).
Subatomic Particles
Proton
Charge
Positive (+)
Electron
Negative (-)
Neutron
No Charge (Neutral; 0)
3. Protons and Neutrons have about the same mass.
4. Protons and neutrons are tightly bound in a tiny nucleus.
Atom Structure
5. How are atoms structured? The nucleus is located in the center of the atom with the
electrons moving in random patterns in the space around the nucleus.
6. Draw an example of an atomic model for an element below.
7. History of Atomic Models
Democritus
Dalton
initiated term
theorized that
“atoms” and
atoms are too
stated that
small to be
atoms could
seen with eye,
not be
are made up of
divided.
only 1kind of
atom (Atomic
Theory of
Matter)
Thompson
used cathode
ray to detect
electrons and
theorized that
electrons were
embedded in
nuclei of atoms
(chocolate chip
model)
Rutherford
utilized gold foil
experiment
involving alpha
particles;
theorized that
atoms had a
dense core which
was a positive
nucleus
Chadwick
named
neutrons
Bohr
theorized that
electrons
were orbiting
the nucleus
8. How many electrons can occupy each shell or energy level? 1st – 2 electrons; 2nd – 8 electrons; 3rd –
18 electrons; 4th – 32 electrons; 5th – 50 electrons; 6th – 72 electrons; nth – 2(n)2
Energy Transfer & Conservation
Name_____________________________________________
7.P.2A.1 Develop and use simple atomic models to illustrate the components of
elements (including the relative position and charge of protons, neutrons, and
electrons).
1. Name the subatomic particles atoms are made of that affect the properties of an atom.
Atoms
2. What is an atom?
3. Atoms have _____________________ and _____________________.
Subatomic Particles
Proton
Charge
Neutron
Negative (-)
3. _____________________ and _____________________ have about the same
mass.
4. Protons and neutrons are tightly bound in a tiny _____________________.
5. How are atoms structured?
6. Draw an example of an atomic model for an element below.
7.History of Atomic Models
Dalton
initiated term
theorized that
“atoms” and
atoms are too
stated that
_________to
atoms could
be seen with
not be
eye, are made
_________. up of only
1kind of atom
(_________
Theory of
_________)
used cathode
ray to detect
_________
and theorized
that electrons
were embedded
in nuclei of
atoms
(chocolate chip
model)
Rutherford
utilized gold foil
experiment
involving
_________
particles;
theorized that
atoms had a
dense core which
was a positive
nucleus
8. How many electrons can occupy each shell or energy level?
named
________
Bohr
theorized that
electrons
were orbiting
the
_________